How to change rights on Groupshare once a project is published


I wanted to know if it is possible to change rights for users once the project created and published (Groupshare cloud version):

- from the online access

- on the local SDL tool?

Is it possible to let users choose if they want to add a new TM of their own in the project, activate, deactivate TM once project published?

Any specific documentation on such kind of accesses/rights?