### Acceptance Criteria

* Add a new menu entry in Administration called "Documents"

* It has two Begin of the insertionsub-pagesEnd of the insertion Begin of the deletion tabs (<mention class="mention" data-id="72513" data-type="user" data-text="@Parimal Satyal">@Parimal Satyal</mention>: we need to adopt the wireframes)End of the deletion

* Types (covered in <mention class="mention" data-id="67443" data-type="work_package" data-text="##67443">##67443</mention> )

* Begin of the insertionReal-timeEnd of the insertion Begin of the deletion Real timeEnd of the deletion collaboration

* The Begin of the insertion**Real-timeEnd of the insertion Begin of the deletion **Real timeEnd of the deletion collaboration** Begin of the insertionpageEnd of the insertion Begin of the deletion tabEnd of the deletion

* Allows to enable/disable real time collaboration

* When disabled

* There is not BlockNote anywhere.

* Old CKEditor5 markdown based are still used

* In the documents index page the &quot;+ Document&quot; button forwards to the `documents/new` route

* When enabled

* OpenProject expects a Hocuspocus server to be present.

* If the Hocuspocus server is not present, then OpenProject shows errors (it is expected to misbehave)

* In the documents index page the &quot;+ Document&quot; button creates a new document and forwards to the `documents/<id>` route.


**Out of scope**

* Health checks and diagnostics.