Begin of the insertion**As a** project manager
**I want to** understand the relations constraints when setting dates or switching scheduling mode
**So that** I feelEnd of the insertion Begin of the deletion This is part of ##42388, splitEnd of the deletion in Begin of the insertioncontrol and avoid switchingEnd of the insertion Begin of the deletion smaller chunksEnd of the deletion to Begin of the insertionGantt view to understand relations.End of the insertion Begin of the deletion deliver values more often.End of the deletion

Begin of the insertion#### Acceptance criteria

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

* ThereEnd of the insertion Begin of the deletion This chunkEnd of the deletion is Begin of the insertionnow an _UnderlineNav_ bar atEnd of the insertion Begin of the deletion about addingEnd of the deletion the Begin of the insertiontop:

* With three options:

* Dates

* Predecessors

* Successors

* Children

* Each of theEnd of the insertion Begin of the deletion relationsEnd of the deletion tabs Begin of the insertiondisplaysEnd of the insertion Begin of the deletion toEnd of the deletion the Begin of the insertionnumber of relations of  that type with a badge

* In each tab, all relations of that type are displayed in a box list

* The content is the same as in the "Relations" tab of the work package, but without the section header

* In the "Predecessors" tab, when there are multiple predecessors, the one setting theEnd of the insertion date Begin of the insertionof the current work package has a labelEnd of the insertion Begin of the deletion picker.

BeforeEnd of the deletion that Begin of the insertionsays "Closest" next toEnd of the insertion the date Begin of the insertionand lagEnd of the insertion Begin of the deletion picker does not displayEnd of the deletion information Begin of the insertion

* When two predecessors or more have the same end date, by convention the oldest one is chosen as the closest (_created\_at_ field).

* If there are no predecessorsEnd of the insertion Begin of the deletion about predecessors, successors,End of the deletion and Begin of the insertionautomatic scheduling modeEnd of the insertion Begin of the deletion children relations.

ThisEnd of the deletion is Begin of the insertionselectedEnd of the insertion Begin of the deletion describedEnd of the deletion in Begin of the deletion greater details inEnd of the deletion the Begin of the insertiondate picker:

* a blankslate with a primary action to add a predecessor willEnd of the insertion Begin of the deletion parent work package.

It canEnd of the deletion be Begin of the insertiondisplayed (permissions allowing)


#### Visuals

_**Note:** Please check_ [_Figma_](https://www.figma.com/design/HrWVktq0SsGI2dqqIKQ11M/Scheduling---Lag-and-Modes?node-id=175-3641) _for the most recent mockups._

**Date picker Predecessors tab:**

<img class="image_resized op-uc-image op-uc-image_inline" style="width:540px;" src="/api/v3/attachments/226781/content">End of the insertion Begin of the deletion started only once ##59539 is completed.End of the deletion