While creating a user, you will need to assign them to a group. The group you assign them to will dictate the level of permissions they have and what they can do in your instance of topShelf. Begin by creating a user. In the group dropdown. Select the group that you would like the user to be put in.

Groups can be created by going to Admin>User Groups

Here you can add new user groups or you can use the existing/default groups. If you click edit next to any of the groups you can edit permissions of what users in those groups have access to.

Review the check boxes. Add or remove permissions as desired.