Group permissions allow or restrict what a user within that group can or cannot do. Go to Admin>User Groups and click edit next to the group you want to set the permissions.

That will bring up the Edit Group Permisions Page, The permissions are divided into three block sections; Customer Portal, Mobile Device, and Web Administration Portal. You will notice different color blocks within these. They denote the features in the package of topShelf that you have purchased.

The check boxes are arranged to give permissions to Use, Search, View, Create, Edit and Delete. By checking a box next to a feature you are giving any user within that group permission to perform that action in that section of topShelf.