Classes, instructors and passes to set first
List classes with length, level and their usual room. Add instructors and trainers with working hours, and personal training services with durations and buffers. Decide the places per room, the cancellation window and how many visits each class pass holds. Publish a few weeks of timetable, add the booking widget to your site and send regulars the link to your booking page. A small gym can start on the Free plan at €0 with 2 staff accounts and move to Standard at €19 or Pro at €39 when the team grows.
What a gym still needs elsewhere
Base runs the timetable, the bookings and the passes. Several things gyms usually rely on are not part of Base.