Begin of the insertion### Note

End of the insertion Extracted from Epic <mention class="mention" data-id="31992" data-type="work_package" data-text="#31992">#31992</mention> related to duration.

Begin of the insertionThis work package describes how values for the start date, the finish date and duration should changeEnd of the insertion Begin of the deletion # Scenarios (workEnd of the deletion in Begin of the insertionresponse to changes to any of one of them.End of the insertion Begin of the deletion progress)End of the deletion

Begin of the insertionA lot of these are self-explanatory, but explicitly describing these behaviours helps us particularly in the testing phase to ensure that the date picker behaves as logically and intuitively as possible, whilst also reducing chances of data loss (for example, accidentally having a start date change when the user does not expect it).

### Scenarios

####End of the insertion Begin of the deletion ##End of the deletion Scenario Begin of the insertion1End of the insertion Begin of the deletion 1:End of the deletion

* Setup.
* Start date: Monday, February 8, 2021
* Finish date: empty
* Duration: empty
* Change
* User enters a duration of 10 days (duration in focus)
* Expected result:
* The finish date is set Friday, February 19 2021 (derived)

Begin of the insertion####End of the insertion Begin of the deletion <figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31047/content"></div></figure>

##End of the deletion Scenario 2

* Setup
* Start date: empty
* Finish date: empty
* Duration: empty
* Change
* User enters a duration of 10 days
* Expected result:
* No date is added

Begin of the insertion####End of the insertion Begin of the deletion <figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31048/content"></div></figure>

##End of the deletion Scenario 3

* Setup
* Start date: empty
* Finish date: Friday, February 19, 2021
* Duration: empty
* Change
* User enters a duration of 10 days (duration in focus).
* Expected result:
* The start date is set to Monday, February 8, 2021 (derived)

Begin of the insertion####End of the insertion Begin of the deletion <figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31049/content"></div></figure>

##End of the deletion Scenario 4

* Setup
* Start date: Monday, February 8, 2021
* Finish date: Friday, February 19, 2021
* Duration: 10
* Change
* User changes duration to 11 days (duration in focus).
* Expected result:
* The finish date is changed to Monday, February, 22 2021

Begin of the insertion####End of the insertion Begin of the deletion <figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31050/content"></div></figure>

##End of the deletion Scenario 5

* Setup
* Start date: Monday, February 8, 2021
* Finish date: Monday, February 22, 2021
* Duration: 11
* Change
* User changes duration to 10 days (duration in focus)
* Expected result:
* The finish date is changed to Friday, February, 19, 2021 Begin of the insertion
* unless NWD are included, in which case, finish date is changed to Sunday, February, 21, 2021.End of the insertion

Begin of the insertion####End of the insertion Begin of the deletion <figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31051/content"></div></figure>

##End of the deletion Scenario 6

* Setup
* Start date: Tuesday, February 9, 2021
* Finish date: Friday, February 12, 2021
* Change
* Remove duration.
* Expected result
* Finish date is also removed, start date is maintained as is.

Begin of the insertion####End of the insertion Begin of the deletion <figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31052/content"></div></figure>

##End of the deletion Scenario 7

* Setup
* Start date: Monday, February 8, 2021
* Finish date: Wednesday, February 11, 2021
* Duration: 4
* Change
* User alters the start date to Tuesday, February 9, 2021 (start date in focus)
* Expected result
* Finish date is maintained, duration is automatically adjusted to 3 days (derived; logic = changing Begin of the insertiononeEnd of the insertion date Begin of the insertionwhen the other is presentEnd of the insertion affects Begin of the insertionduration vs. move the second date).End of the insertion Begin of the deletion duration)End of the deletion

Begin of the insertion####End of the insertion Begin of the deletion <figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31053/content"></div></figure>

##End of the deletion Scenario 8

* Setup
* Start date: Tuesday, February 9, 2021
* Finish date: Friday, February 12, 2021
* Duration: 4
* Change
* User alters the finish date to Feb 11, 2021 (finish date is in focus).
* Expected result
* Start date is unaffected, duration is now set to 3 days (derived from Begin of the insertiondates)End of the insertion Begin of the deletion dates).End of the deletion

Begin of the insertion####End of the insertion Begin of the deletion <figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31064/content"></div></figure>

##End of the deletion Scenario 9

* Setup
* Start date: empty
* Finish date: empty
* Duration: 4
* Change
* User enters the finish date of Friday, February 12, 2021 (finish date in focus).
* Expected result
* The start date is set to Tuesday, February 9, 2021 (derived from duration).

Begin of the insertion####End of the insertion Begin of the deletion <figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31055/content"></div></figure>

##End of the deletion Scenario 10

* Setup
* Start date: empty
* Finish date: Thursday, February 11, 2021
* Duration: empty
* Change
* User enters the start date of Tuesday, February 09, 2021 (start date in focus).
* Expected result
* Duration is set to 3 (derived from start date)

Begin of the insertion#### Scenario 11End of the insertion Begin of the deletion <figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31056/content"></div></figure>End of the deletion

Begin of the insertion* Setup
* Start date: Monday, February 9, 2021
* Finish date: Wednesday, February 11, 2021
* Duration: 3
* Change
* The user moves the drag handle on the left border (start date) of the box representing the work package in Gantt chart and Team planner one day to the right (to Feb 10, 2021)
* Expected result
* The duration is reduced to 2. The start date is set to Feb 10, 2021. The finish date is left unchanged.

####End of the insertion Begin of the deletion ##End of the deletion Scenario Begin of the insertion12End of the insertion Begin of the deletion 11aEnd of the deletion

* Setup
* Begin of the insertionStart date: Tuesday, February 9, 2021
* Finish date: Thursday February 11, 2021
* Duration: 3
* Change
* The user moves theEnd of the insertion Begin of the deletion TwoEnd of the deletion work Begin of the insertionpackage by dragging it to the right so start date is Friday,  Feb 12, 2021.
* Expected resultEnd of the insertion Begin of the deletion packagesEnd of the deletion
* Begin of the insertionThe duration is maintained. Start state is now Friday, Febuary 12 2021 (as set by drag), end date is set Tuesday, Friday, February 16 (derived based on duration).

#### Scenario 13

End of the insertion Begin of the deletion Task 1:
End of the deletion * Begin of the insertionSetup
* End of the insertion Start date: Begin of the insertionTuesday, February 9, 2021
* Finish date: Thursday, February 11, 2021
* Duration: 3
* Change
* The user moves the start day to Wednesday, **March 3**, 2021 (note that this is _after_ the original start date).
* Expected result
* Duration is maintained and the finish date is now moved to Friday, March 5, 2021.

#### Scenario 14

* Setup
* Start date: Tuesday, February 9, 2021
* Finish date: Thursday, February 11, 2021
* Duration: 3
* Change
* The user moves the start day to Wednesday, **February 3**, 2021 (note that this is _before_ the original start date).
* Expected result
* The start date is now Wednesday, February 3.
* The finish date is conserved (Thursday, February 11, 2021).
* The duration is updated to 7 days.

### Archived Scenarios

The following scenarios are no longer relevant because they deal with behaviour concerning follows/preceeds and parent/child relationship that do not change with the introduction of duration. They are nevertheless retained here as an archive.

#### ~~Scenario 15~~

* ~~Setup~~
* ~~Two work packages~~
* ~~Task 1:~~
* ~~Start date:End of the insertion Monday, 15 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Wednesday, 17 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~Duration: 3~~End of the insertion Begin of the deletion Duration: 3End of the deletion
* Begin of the insertion~~Task 2:~~End of the insertion Begin of the deletion Task 2:End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Begin of the insertionempty~~End of the insertion Begin of the deletion emptyEnd of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Begin of the insertionempty~~End of the insertion Begin of the deletion emptyEnd of the deletion
* Begin of the insertion~~Duration: empty.~~End of the insertion Begin of the deletion Duration: empty.End of the deletion
* Begin of the insertion~~Change~~End of the insertion Begin of the deletion ChangeEnd of the deletion
* Begin of the insertion~~ChangeEnd of the insertion Begin of the deletion ChangeEnd of the deletion relations such that Task 2 preceeds Task Begin of the insertion1.~~End of the insertion Begin of the deletion 1.End of the deletion
* Begin of the insertion~~Expected result~~End of the insertion Begin of the deletion Expected resultEnd of the deletion
* Begin of the insertion~~DatesEnd of the insertion Begin of the deletion DatesEnd of the deletion for Task 2 are derived from this &quot;proceeds&quot; Begin of the insertionrelation.~~End of the insertion Begin of the deletion relation.End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Friday, 12 February, 2021 (dates including and after the work package this one preceedes are Begin of the insertionblocked)~~End of the insertion Begin of the deletion blocked)End of the deletion
* Begin of the insertion~~Duration:End of the insertion Begin of the deletion Duration:End of the deletion 1 Begin of the insertion(automatic)~~End of the insertion Begin of the deletion (automatic)End of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Friday, 12 February, 2021 (derived from Begin of the insertionduration)~~End of the insertion Begin of the deletion duration)End of the deletion
* Begin of the insertion~~Warning:End of the insertion Begin of the deletion Warning:End of the deletion Reminder the start and end dates need to be before the dates of the work package this one is Begin of the insertionpreceeding.~~End of the insertion Begin of the deletion preceeding.End of the deletion
* Begin of the insertion~~**\[open\]**End of the insertion Begin of the deletion **\[open\]**End of the deletion Invalid dates are Begin of the insertiondisabled.~~ _~~ThisEnd of the insertion Begin of the deletion disabled. _ThisEnd of the deletion is something that needs to be explored further, both in terms of development effort and the impact on usability and Begin of the insertioncomprehension.~~_End of the insertion Begin of the deletion comprehension._End of the deletion
* Begin of the insertion~~**\[open\]**End of the insertion Begin of the deletion **\[open\]**End of the deletion Possible challenge: what if the dates are limited by another work package that the user (who can modify the dates for the current work package) cannot see, because of Begin of the insertionpermissions?~~End of the insertion Begin of the deletion permissions?End of the deletion

Begin of the insertion#### ~~Scenario 16~~End of the insertion Begin of the deletion <figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31057/content"></div></figure>End of the deletion

Begin of the deletion ## Scenario 11b (new, to be discussed)

End of the deletion * Begin of the insertion~~Setup~~End of the insertion Begin of the deletion SetupEnd of the deletion
* Begin of the insertion~~TwoEnd of the insertion Begin of the deletion TwoEnd of the deletion work Begin of the insertionpackages~~End of the insertion Begin of the deletion packagesEnd of the deletion
* Begin of the insertion~~Task 1:~~End of the insertion Begin of the deletion Task 1:End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Monday, 15 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Wednesday, 17 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~Duration: 3~~End of the insertion Begin of the deletion Duration: 3End of the deletion
* Begin of the insertion~~Task 2:~~End of the insertion Begin of the deletion Task 2:End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Thursday, 11 Febuary, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Monday, 17 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~Duration: 5~~End of the insertion Begin of the deletion Duration: 5End of the deletion
* Begin of the insertion~~Change~~End of the insertion Begin of the deletion ChangeEnd of the deletion
* Begin of the insertion~~ChangeEnd of the insertion Begin of the deletion ChangeEnd of the deletion relations such that Task 2 preceeds Task Begin of the insertion1.~~End of the insertion Begin of the deletion 1.End of the deletion
* Begin of the insertion~~**\[open,End of the insertion Begin of the deletion **\[open,End of the deletion to be discussed\]** Expected Begin of the insertionresult~~End of the insertion Begin of the deletion resultEnd of the deletion
* Begin of the insertion~~DatesEnd of the insertion Begin of the deletion DatesEnd of the deletion for Task 2 are changed, such that finish date is the first available date preceeding Task 1. Duration is Begin of the insertionconserved:~~End of the insertion Begin of the deletion conserved:End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Monday, 8 February, 2021 (derived from duration and finish Begin of the insertiondate)~~End of the insertion Begin of the deletion date)End of the deletion
* Begin of the insertion~~Duration: 5~~End of the insertion Begin of the deletion Duration: 5End of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Friday, 12 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~Warning:End of the insertion Begin of the deletion Warning:End of the deletion Reminder the start and end dates need to be before the dates of the work package this one is Begin of the insertionpreceeding.~~End of the insertion Begin of the deletion preceeding.End of the deletion

Begin of the insertion~~**\[note\]**End of the insertion Begin of the deletion **\[note\]**End of the deletion Today, the behaviour today seems Begin of the insertioninconsistent.~~End of the insertion Begin of the deletion inconsistent.End of the deletion

Begin of the insertion~~ForEnd of the insertion Begin of the deletion ForEnd of the deletion example, in this Begin of the insertionexample,~~ _~~Test a3~~_ ~~begins after~~ _~~Test a2~~_~~. When~~ _~~Test a3~~_ ~~isEnd of the insertion Begin of the deletion example, _Test a3_ begins after _Test a2_. When _Test a3_ isEnd of the deletion given a &quot;preceeds&quot; relationship Begin of the insertionat~~ _~~a2~~_~~,End of the insertion Begin of the deletion at _a2_,End of the deletion dates don&#39;t automatically Begin of the insertionadjust:~~End of the insertion Begin of the deletion adjust:End of the deletion

<figure class="image op-uc-figure" style="width:75%;"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31006/content"></div></figure>

Begin of the insertion~~IfEnd of the insertion Begin of the deletion IfEnd of the deletion we flip the relationship, (give Begin of the insertionTest~~ _~~a2~~_ ~~aEnd of the insertion Begin of the deletion Test _a2_ aEnd of the deletion &quot;preceeds&quot; relationship Begin of the insertionto~~ _~~Test a3),~~_ ~~theEnd of the insertion Begin of the deletion to _Test a3),_ theEnd of the deletion dates for Test a3 seem to adjust automatically so it follows Begin of the insertiona2:~~End of the insertion Begin of the deletion a2:End of the deletion

<figure class="image op-uc-figure" style="width:75%;"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31007/content"></div></figure>

Begin of the insertion~~ThisEnd of the insertion Begin of the deletion ThisEnd of the deletion second behaviour seems reasonable; a2 terminates on 22.10, so a3 automatically starts on 23.10. Do we want to preseve this? Or perhaps make the behaviour more consistent between the two Begin of the insertioncases?~~End of the insertion Begin of the deletion cases?End of the deletion

Begin of the insertion#### ~~Scenario 17~~End of the insertion Begin of the deletion ## Scenario 12aEnd of the deletion

* Begin of the insertion~~Setup~~End of the insertion Begin of the deletion SetupEnd of the deletion
* Begin of the insertion~~TwoEnd of the insertion Begin of the deletion TwoEnd of the deletion work Begin of the insertionpackages~~End of the insertion Begin of the deletion packagesEnd of the deletion
* Begin of the insertion~~Task 1:~~End of the insertion Begin of the deletion Task 1:End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Monday, 8 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Wednesday, 10 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~Duration: 3~~End of the insertion Begin of the deletion Duration: 3End of the deletion
* Begin of the insertion~~Task 2:~~End of the insertion Begin of the deletion Task 2:End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Begin of the insertionempty~~End of the insertion Begin of the deletion emptyEnd of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Begin of the insertionempty~~End of the insertion Begin of the deletion emptyEnd of the deletion
* Begin of the insertion~~Duration: empty~~End of the insertion Begin of the deletion Duration: emptyEnd of the deletion
* Begin of the insertion~~Change~~End of the insertion Begin of the deletion ChangeEnd of the deletion
* Begin of the insertion~~ChangeEnd of the insertion Begin of the deletion ChangeEnd of the deletion relations such that Task 2 follows Task Begin of the insertion1.~~End of the insertion Begin of the deletion 1.End of the deletion
* Begin of the insertion~~Expected result~~End of the insertion Begin of the deletion Expected resultEnd of the deletion
* Begin of the insertion~~DatesEnd of the insertion Begin of the deletion DatesEnd of the deletion for Task 2 are derived from this &quot;follows&quot; Begin of the insertionrelation.~~End of the insertion Begin of the deletion relation.End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Thursday, 11 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~Duration:End of the insertion Begin of the deletion Duration:End of the deletion 1 Begin of the insertion(automatic)~~End of the insertion Begin of the deletion (automatic)End of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Thursday, 11 February, 2021 (derived from Begin of the insertionduration)~~End of the insertion Begin of the deletion duration)End of the deletion
* Begin of the insertion~~Warning:End of the insertion Begin of the deletion Warning:End of the deletion Reminder the start and end dates need to be after the work package this one Begin of the insertionfollowing.~~End of the insertion Begin of the deletion following.End of the deletion
* Begin of the insertion~~**\[open\]**End of the insertion Begin of the deletion **\[open\]**End of the deletion Invalid dates are Begin of the insertiondisabled.~~ _~~ThisEnd of the insertion Begin of the deletion disabled. _ThisEnd of the deletion is something that needs to be explored further, both in terms of development effort and the impact on usability and Begin of the insertioncomprehension.~~_End of the insertion Begin of the deletion comprehension._End of the deletion
* Begin of the insertion~~**\[open\]**End of the insertion Begin of the deletion **\[open\]**End of the deletion Possible challenge: what if the dates are limited by another work package that the user (who can modify the dates for the current work package) cannot see, because of Begin of the insertionpermissions?~~End of the insertion Begin of the deletion permissions?End of the deletion

Begin of the insertion#### ~~Scenario 18~~End of the insertion Begin of the deletion <figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31058/content"></div></figure>End of the deletion

Begin of the deletion ## Scenario 21b (new, to be discussed)

End of the deletion * Begin of the insertion~~Setup~~End of the insertion Begin of the deletion SetupEnd of the deletion
* Begin of the insertion~~TwoEnd of the insertion Begin of the deletion TwoEnd of the deletion work Begin of the insertionpackages~~End of the insertion Begin of the deletion packagesEnd of the deletion
* Begin of the insertion~~Task 1:~~End of the insertion Begin of the deletion Task 1:End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Monday, 15 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Friday, 19 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~Duration: 5~~End of the insertion Begin of the deletion Duration: 5End of the deletion
* Begin of the insertion~~Task 2:~~End of the insertion Begin of the deletion Task 2:End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Tuesday, 16 Febuary, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Thursday, 18 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~Duration: 3~~End of the insertion Begin of the deletion Duration: 3End of the deletion
* Begin of the insertion~~Change~~End of the insertion Begin of the deletion ChangeEnd of the deletion
* Begin of the insertion~~ChangeEnd of the insertion Begin of the deletion ChangeEnd of the deletion relations such that Task 2 follows Task Begin of the insertion1.~~End of the insertion Begin of the deletion 1.End of the deletion
* Begin of the insertion~~**\[open,End of the insertion Begin of the deletion **\[open,End of the deletion to be discussed\]** Expected Begin of the insertionresult~~End of the insertion Begin of the deletion resultEnd of the deletion
* Begin of the insertion~~DatesEnd of the insertion Begin of the deletion DatesEnd of the deletion for Task 2 are changed, such that finish date is the first available date following Task 1. Duration is Begin of the insertionconserved:~~End of the insertion Begin of the deletion conserved:End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Monday, 22 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~Duration: 3~~End of the insertion Begin of the deletion Duration: 3End of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Wednesday, 14 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~Warning:End of the insertion Begin of the deletion Warning:End of the deletion Reminder the start and end dates need to be after the dates of the work package this one is Begin of the insertionfollowing.~~End of the insertion Begin of the deletion following.End of the deletion

Begin of the insertion~~**\[note\]**End of the insertion Begin of the deletion **\[note\]**End of the deletion Today, the behaviour today seems Begin of the insertioninconsistent.~~End of the insertion Begin of the deletion inconsistent.End of the deletion

Begin of the insertion~~ForEnd of the insertion Begin of the deletion ForEnd of the deletion example, in this Begin of the insertionexample,~~ _~~Test a3~~_ ~~begins after~~ _~~Test a2,~~_ ~~butEnd of the insertion Begin of the deletion example, _Test a3_ begins after _Test a2,_ butEnd of the deletion before its finish date. Begin of the insertionWhen~~ _~~Test a2~~_ ~~isEnd of the insertion Begin of the deletion When _Test a2_ isEnd of the deletion given a &quot;follows&quot; relationship Begin of the insertionat~~ _~~a3~~_~~,End of the insertion Begin of the deletion at _a3_,End of the deletion dates don&#39;t automatically Begin of the insertionadjust:~~End of the insertion Begin of the deletion adjust:End of the deletion

<figure class="image op-uc-figure" style="width:75%;"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31009/content"></div></figure>

Begin of the insertion~~IfEnd of the insertion Begin of the deletion IfEnd of the deletion we flip the relationship, (give Begin of the insertionTest~~ _~~a2~~_ ~~aEnd of the insertion Begin of the deletion Test _a2_ aEnd of the deletion &quot;follows&quot; relationship Begin of the insertionto~~ _~~Test a3),~~_ ~~theEnd of the insertion Begin of the deletion to _Test a3),_ theEnd of the deletion dates for Test a3 seem to adjust automatically so it follows Begin of the insertiona2:~~End of the insertion Begin of the deletion a2:End of the deletion

<figure class="image op-uc-figure" style="width:75%;"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31008/content"></div></figure>

Begin of the insertion~~ThisEnd of the insertion Begin of the deletion ThisEnd of the deletion second behaviour seems reasonable; a2 terminates on 22.10, so a3 automatically follows on the next available day, 23.10. Do we want to this? Or perhaps make the behaviour more consistent between the two Begin of the insertioncases?~~End of the insertion Begin of the deletion cases?End of the deletion

Begin of the insertion#### ~~Scenario 19~~End of the insertion Begin of the deletion ## Scenario 13End of the deletion

* Begin of the insertion~~Setup~~End of the insertion Begin of the deletion SetupEnd of the deletion
* Begin of the insertion~~TwoEnd of the insertion Begin of the deletion TwoEnd of the deletion work Begin of the insertionpackages~~End of the insertion Begin of the deletion packagesEnd of the deletion
* Begin of the insertion~~Task 1:~~End of the insertion Begin of the deletion Task 1:End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Monday, 8 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Wednesday, 10 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~Duration: 3~~End of the insertion Begin of the deletion Duration: 3End of the deletion
* Begin of the insertion~~Task 2:~~End of the insertion Begin of the deletion Task 2:End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Begin of the insertionempty~~End of the insertion Begin of the deletion emptyEnd of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Begin of the insertionempty~~End of the insertion Begin of the deletion emptyEnd of the deletion
* Begin of the insertion~~Duration: empty.~~End of the insertion Begin of the deletion Duration: empty.End of the deletion
* Begin of the insertion~~Change~~End of the insertion Begin of the deletion ChangeEnd of the deletion
* Begin of the insertion~~ChangeEnd of the insertion Begin of the deletion ChangeEnd of the deletion relations such that Task 2 is a child of Task Begin of the insertion1.~~End of the insertion Begin of the deletion 1.End of the deletion
* Begin of the insertion~~Expected result~~End of the insertion Begin of the deletion Expected resultEnd of the deletion
* Begin of the insertion~~SinceEnd of the insertion Begin of the deletion SinceEnd of the deletion the parent does not have any date information, dates and duration for Task 1 are derived from the child (as shown Begin of the insertionbelow)~~End of the insertion Begin of the deletion below)End of the deletion
* Begin of the insertion~~TheEnd of the insertion Begin of the deletion TheEnd of the deletion work package is automatically Begin of the insertionscheduled.~~End of the insertion Begin of the deletion scheduled.End of the deletion
* Begin of the insertion~~StartEnd of the insertion Begin of the deletion StartEnd of the deletion date: Monday, 8 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~EndEnd of the insertion Begin of the deletion EndEnd of the deletion date: Wednesday, 10 February, Begin of the insertion2021~~End of the insertion Begin of the deletion 2021End of the deletion
* Begin of the insertion~~Duration: 10~~End of the insertion Begin of the deletion Duration: 10

<figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31060/content"></div></figure>

### Scenario 13: Additional cases to discuss

* **\[open\]** If the parent work package already has dates, and if they are within the range of the child:
* Current behaviour: the original dates of the parent are discarded and replaced by the start/end dates of the sum of all children.
* **\[open\]** If the parent work package already has dates, but either start or finish date (or both) are outside of the range of the child:
* Current behaviour: the original dates of the parent are discarded and replaced by the start/end dates of the sum of all children.
* Child work packages are not limited by the date range of the parent; instead, changes to the dates of the children can &quot;stretch&quot; or &quot;compress&quot; the start and finish dates of the parent.
* **\[open\]** Do we maintain current behaviour?

## Scenario 14

* Setup
* Start date: Monday, February 9, 2021
* Finish date: Wednesday, February 11, 2021
* Duration: 3
* Change
* The user moves the drag handle on the left border (start date) of the box representing the work package in Gantt chart and Team planner one day to the right (to Feb 10, 2021)
* Expected result
* The duration is reduced to 2. The start date is set to Feb 10, 2021. The finish date is left unchanged.

## Scenario 15

* Setup
* Start date: Tuesday, February 9, 2021
* Finish date: Thursday February 11, 2021
* Duration: 3
* Change
* The user moves the work package by dragging it to the right so start date is Friday,  Feb 12, 2021.
* Expected result
* The duration is maintained. Start state is now Friday, Febuary 12 2021 (as set by drag), end date is set Tuesday, Friday, February 16 (derived based on duration).

## Scenario 16a

(Added in response to <mention class="mention" data-id="42086" data-type="user" data-text="@Wieland Lindenthal">@Wieland Lindenthal</mention>&#39;s [comment on the Datepicker feature](https://community.openproject.org/projects/openproject/work_packages/41341#activity-5)).

* Setup
* Start date: Tuesday, February 9, 2021
* Finish date: Thursday, February 11, 2021
* Duration: 3
* Change
* The user moves the start day to Wednesday, **March 3**, 2021 \*\*(\*\*note that this is _after_ the original start date).
* Expected result
* Duration is maintained and the finish date is now moved to Friday, March 5, 2021.

<figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="/api/v3/attachments/31061/content"></div></figure>

## Scenario 16b (new, to be discussed)

* Setup
* Start date: Tuesday, February 9, 2021
* Finish date: Thursday, February 11, 2021
* Duration: 3
* Change
* The user moves the start day to Wednesday, **February 3**, 2021 \*\*(\*\*note that this is _before_ the original start date).
* Expected result
* The start date is now Wednesday, February 3.
* **\[open\]** The finish date is conserved (Thursday, February 11, 2021).
* **\[open\]** The duration is updated to 7 days.End of the deletion