FirstSpirit has a standard "PermissionService" which let's you define Permissions in a "groups.xml" file directly on the server.
These Permissions can be used in the input component "cms_input_permission"
It would be really nice to have a GUI to make changes to this file, since it's possible to save the xml file with an invalid syntax which results in a very problematic behavior -> No permissions get generated and all pages throw 403 Forbidden errors.