You can print a list of users and/or groups by clicking on Tools/Security/User and Group Accounts. That opens a window with a “Print Users and Groups” button. I don’t see any way to print the rights granted to each group.
Changing my answer: Under Tools/Analyze/Documenter, you get a window where you can choose various componenets of the database. Under the Options button, you can select “Permissions by User and Group.”