**As a** project manager
**I want to** add scheduling constraints 
**So that** I better control the scheduling in my project.

Begin of the insertion#### Acceptance criteriaEnd of the insertion Begin of the deletion **Acceptance criteria**End of the deletion

Begin of the insertion##### **Scheduling modes:**

End of the insertion * A work package Begin of the insertionnow has threeEnd of the insertion Begin of the deletion can have to differentEnd of the deletion scheduling modes:

* Begin of the insertionManualEnd of the insertion Begin of the deletion Manually scheduled (default)End of the deletion

* Begin of the insertionStartEnd of the insertion Begin of the deletion Automatically scheduled

* If the user selects _Automatically scheduled_ the user can select between two scheduling constraints:

1. As earlyEnd of the deletion as Begin of the insertionsoon asEnd of the insertion possible Begin of the deletion (default)End of the deletion

Begin of the insertion* Start noEnd of the insertion Begin of the deletion 2. NotEnd of the deletion earlier than

* Begin of the insertionThe default modeEnd of the insertion Begin of the deletion When the scheduling constraint _Not earlier than_End of the deletion is Begin of the insertionManual, including for new work packages.End of the insertion Begin of the deletion activated there is a date picker that allows to select the `Constraint date`.End of the deletion


Begin of the insertion##### Gantt view: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/113671/content"></div><figcaption class="op-uc-figure--description">Default constraint type: As soon as possible</figcaption></figure>End of the deletion

* Begin of the deletion In Gantt view:End of the deletion When moving a automatically scheduled work package forward the constraint is changed from Begin of the insertion_As soonEnd of the insertion Begin of the deletion `_as earlyEnd of the deletion as Begin of the insertionpossible_End of the insertion Begin of the deletion possible_`End of the deletion to Begin of the insertion_Start noEnd of the insertion Begin of the deletion `_notEnd of the deletion earlier Begin of the insertionthan._End of the insertion Begin of the deletion than_`_._End of the deletion The constraint date is set to the new start date of the moved work package. 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/113673/content"></div><figcaption class="op-uc-figure--description">Constraint Type: Start no earlier than</figcaption></figure>

End of the deletion * When changing the the constraint type from _Not earlier than_ to _As soon as Begin of the insertionpossible,_End of the insertion Begin of the deletion possible_End of the deletion the _constraint date_ is deleted.

* In the work packages module and the Gantt module there are two new work package columns:

* Begin of the insertionScheduling modeEnd of the insertion Begin of the deletion `Constraint type`End of the deletion

* Begin of the insertionConstraint date


##### **Date picker:**

* The date picker will be Primerised.

* _Changes to the info/warning banner are described in a separate section below._

* There is now an _UnderlineNav_ bar at the top:

* With three options:

* Dates (the standard date picker)

* Predecessors

* Successors

* _The Predecessor and Successor tabs are described in a separate section below._

* The &quot;Working days only&quot; check box is shorted to &quot;Working days&quot;.

* There is a new dropdown with label &quot;Scheduling mode&quot; with the three options.

* **Manual scheduling:**

* Additional fields:

* None

* Date selection:

* The dates are freely selectable, without restrictions.

* Relations don&#39;t affect the start and finish dates.

* A manually scheduled work package can push and pull successors.

* **Start as soon as possible:**

* Additional fields:

* None.

* Date selection:

* The _Start date_ and _Finish date_ fields are read-only

* Duration remains editable

* The mini calendar goes into read-only mode

* **Start not earlier than:**

* Additional fields:

* Constraint date:

* This will be in a different colour.

* The constraint date will be marked in the same colour in the date picker, with top, left and bottom borders (but no right border, to suggest that the constraint is only on one side)

* Date selection:

* In most cases, start date will be the same as the constraint date.

* Changing the _start date_ will change the _constraint date_ to that same same date, regardless of if the new start date is before or after the current constraint date.

* If there is a predecessor, it can move a work package into the future (past the constraint date) but never earlier than the constraint date.

* If constraint date is _before_ current start date, it can be changed independently without affecting the start date.

* If constraint date is _after_ the current start date, the start date will be changed to the constraint


##### **Date picker banners:**

* **Manual scheduling:**

* Colour: Warning.

* Text:

* **Manually scheduled. Relations will not affect dates.**

Change scheduling mode for automatic scheduling.

* Action: Show relations

* **Start as soon as possible:**

* Case 1: The work package does not have a predecessor, the start date is the same as the project start date.

* Colour: Info

* Text:

* \*\*Dates are automatically set by the project start date.\*\*

You can modify this in your project timeline.

* Action: Project timeline

* Case 2: The work package has a predecessor.

* Colour: Info

* Text:

* \*\*Start date is set by a predecessor.\*\*

Changes to a predecessor may move this work package.

* Action: Show relations

* **Start not earlier than**

* Case 1: The start date is not the same as the constraint date because a predecessor has pushed it tgo the future.

* Colour: Info

* Text:

* \*\*Start date is set by a predecessor.\*\*

Changes to a predecessor may move this work package.

* Action: Show relations

* Case 2: The start date is the same as the constraint date.

* Colour: Info

* Text:

* \*\*Start date is limited by a constraint date.\*\*

Predecessors can only move this work package after this date.

* Action: Show relations


##### **Date picker: Predecessor and Successor tabs**

* _To be defined_


#### Out of scope

* The ability to change the default schedule mode.

* At an admin or a project level

* Other scheduling modes such as &quot;Must start on&quot; or &quot;Start not later than&quot;

* Editable lag in relations.

* This will have been addresssed by the time we work on this feature: ###22360


#### Visuals

_**Note:** Please check_ [_Figma_](https://www.figma.com/design/amVGcHqRQyR8x4EsqV9H99/Date-picker?node-id=971-8743) _for the most recent mockups._

<img class="image_resized op-uc-image op-uc-image_inline" style="width:529px;" src="/api/v3/attachments/173535/content"> <img class="image_resized op-uc-image op-uc-image_inline" style="width:528px;" src="/api/v3/attachments/173536/content"> <img class="image_resized op-uc-image op-uc-image_inline" style="width:528px;" src="/api/v3/attachments/173537/content">End of the insertion Begin of the deletion `Constraint date`End of the deletion