**As** a project portfolio manager
**I want to** see the dates of stages/gates in a consolidated view
**so that** it is easier to understand the state and progress of a set of projects.

Assumes ###58159 is done.

**Acceptance criteria**

* Every gate/stage can be added as a column to the project list.

* Those are selectable using the already existing means: The modal for "configure view" and the setting for the default columns in the administration. Begin of the insertion

End of the insertion Begin of the deletion

End of the deletion * The autocompleters and column ordering component do not show the colored prefix (see below). Begin of the insertion

End of the insertion Begin of the deletion

End of the deletion * This means stages/gates can be added out of order. This is accepted.

* The value is not displayed in case the stage/gate is disabled in the project (##58163)

* Adding new stages/gates (###58161) does not add the columns as Begin of the insertionaEnd of the insertion default Begin of the insertioncolumn.End of the insertion Begin of the deletion columns.End of the deletion

* The column header for stages/gates has a type indicator.

* It is rhombus shaped for gates

* It is arrow shaped for gates

* The prefix is in the color configured for the stage/gate.

* If a stage/gate column is saved in a list, that list still works if the stage/gate is deleted in the administration.

* The new functionality is hidden behind the feature flag developed as part of ###58159


<img class="op-uc-image op-uc-image_inline" Begin of the insertionsrc="/api/v3/attachments/236597/content">End of the insertion Begin of the deletion src="/api/v3/attachments/199639/content">End of the deletion

**Out of scope**

* Editing the dates is not possible.

* ###59183

* ###59184