From the schedule view, accessible from the Coach, Manager and Pro Shop user roles you can access a class register screen. By finding a class session and opening the Class detail pop up, you can click the 'Register' button:
This will take you to a screen where you can navigate down the sessions within this class using the tabs on the left-hand side. This will show each student and you can update the check-in status (attendance) on the right-hand side:
Each session attendance is unique and this also links to the check-in checkbox on the class detail pop up when opening the Attendees drop down:
