There are two options to activate EGYM+ for your members.
You have to decide once for your studio for one of the following options:
Via the member management system (compatible software required)
Via the new EGYM trainer app (a current version of the EGYM Trainer App assumed)
For option 1, the individual steps of the booking depend on the member software, and how you have initially set it up.
Details (step by step instructions) for option 2 you will find here under second point of EGYM+ via the new EGYM trainer app.