How do I run group classes?

Turn on Run group classes under Settings, My services & forms — it shows the Classes tab. There, tap Add and the wizard takes you through it: a fixed-date course or an ongoing weekly class, the details and venue, pricing as Upfront, Drop-in or Either, and the schedule.

Clients on a class are either enrolled for the whole run or added as drop-ins per session — both are managed from the class roster.