The idea is that chairs of a session can edit or add a session description in the existing collaboration module.
This session description is the same as in the Program - Session Manager.
For activating go to "Program - Setup - Edit a session type - "Chairs can edit the session in the collaboration module"
In the collaboration module chairs will see an edit button.
Character limitations for a session description is also still active here.
On the edit page you have also two ui ressources you can edit: