I have a large seasonal retail business with several categories of employees.  The bulk of my work force does not need any access to Square beside punching in/out.   We use Square payroll and when you add a new employee it asks if you want to track the time for this person, by doing so you also give access to the retail end of the app.  Currently, I can't find a way to only give access to the time clock and zero access to the POS.