A user or a group can be assigned one Role. No user or group can be assigned two roles. However, since a user can be a member of more than one group, each group assigned to a Role will have priority. This is done to overcome inheritance issues. Users will be automatically assigned higher priorities than groups.
To assign a role:
1. Go to Configuration > Roles and Permissions.
2. Click Assign Role.
3. In the User/Group field, select a user or group.
4. In the Role field, select a role from the drop down list and click Add.
5. The selected user or group is added to the list. To remove an entry, click .
6. Click Save.