The opportunity to book the workouts is released 1 week before the training session, the workouts can be booked up to 5 minutes before the start. You can book several classes at a time, but if you do not show up 3 times on booked classes, you will be suspended for seven days. To register at arrival you have to check in with the app. Check-in can be done up until the starting time of the class. If you know you will not attend, you must cancel your workout no later than 2h before the training.