Currently, Classes are listed on the booking pages as distinct entities, with a summary of available spaces indicated on the listing. When switching to the admin side of the app, the entity of the class is replaced by the individual bookings for the class. Once you get more than one booking, it's very cluttered. It would be more useful to click on the class entity and see all of the bookings as detail records for the master class record. Then you could also provide other features, like checking in the attendees to the class, for example.