You can add someone as a Manager or Assistant Manager, the only difference between the two is in terms of hierarchy. A Manager is more senior than an Assistant Manager. View the levels of hierarchy.
To make someone a Manager or Assistant Manager in 7shifts, you must first add them as an Employee.
NOTE: Only Admins can add Managers. Admins and Managers can both add Assistant Managers.
Once that is done, click on their profile and change their User type to Manager or Assistant Manager:
To the right of the Manager's details, you should now see the Manager Permissions. Check all that apply and click Save.
Click here to learn more about manager permissions.