**As an** OpenProject user
**I want to** have multi-select custom fields Begin of the deletion on users for workpackagesEnd of the deletion
**so that** I can more easily show and filter that information.

**Acceptance criteria**

- An admin can configure a custom field of type Begin of the insertion“List”End of the insertion Begin of the deletion “User”End of the deletion to be multi-select.
- Begin of the insertionMulti-selectEnd of the insertion Begin of the deletion An user canEnd of the deletion filter Begin of the deletion the work packages by one user: filterEnd of the deletion all work packages Begin of the insertionwith one value (OR)End of the insertion Begin of the deletion that have have either User A OR User B.End of the deletion
- Begin of the insertionShow multiple values in list view,End of the insertion Begin of the deletion An user can filter the work packages by several user: filter all work packages that have User A AND User B.
- On the work packageEnd of the deletion details view Begin of the insertionand fullscreenEnd of the insertion Begin of the deletion multiple users are shown separated by semicolon.
- In the work package tableEnd of the deletion view Begin of the deletion multiple users are shown separated by semicolon.End of the deletion

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- Begin of the deletion Only users that are members in that project can be added (current behavior).
-End of the deletion If the multi-select attribute is chosen as an grouping criteria in the work package table view there is one group for each Begin of the insertionavailable value combination:
End of the insertion Begin of the deletion constellations
End of the deletion - Begin of the insertionValueEnd of the insertion Begin of the deletion UserEnd of the deletion A: only work packages that have Begin of the insertionvalueEnd of the insertion Begin of the deletion userEnd of the deletion A selected
- Begin of the insertionValueEnd of the insertion Begin of the deletion UserEnd of the deletion B: only work packages that have Begin of the insertionvalueEnd of the insertion Begin of the deletion userEnd of the deletion B selected
- Begin of the insertionValue AEnd of the insertion Begin of the deletion UserEnd of the deletion and B: only work packages that have Begin of the insertionvalueEnd of the insertion Begin of the deletion userEnd of the deletion A and Begin of the insertionvalueEnd of the insertion Begin of the deletion userEnd of the deletion B selected

**Further information**

- Discussed also in the thread [Group custom fields](https://www.openproject.org/topics/280?board_id=7)

**Screens**

**To be specified**

- UI work package table
- UI filter
- UI work packages details view Begin of the insertion

**Out of Scope**

- AND-Filter ("show me all work packages that have value A and B)End of the insertion