In, there are 10 types of users, each one with its own set of permissions and limitations. 

To learn more about managing roles and permissions, click here

You can add users at anytime and link them to the groups / teams of your choice. Email invitations are automatically sent to the newly added user when you click Save.

To delete a user, open the staff list, click the yellow cross on the Active tab, then open the Inactive tab and click the red cross.