A group can consist of many members, the role of the members can be defined by a group manager of the group.
There can be
- 0-n members with the viewer role (read only access),
- 0-n members with the researcher role (read/write/delete),
- 1-n group managers, who can
- add members with a specific role to their group
- change the role of a group member
- remove the group (when no longer used and no files and folders left)