Navigate to My Calendars from the menu and all of your Calendars will be listed.
Separate Calendars are created for each of the following:-
Personal Calendar (primary calendar, cannot be deleted and you are the owner). This Calendar is private to you.
Client Calendar for 1:1 Personal Training. You'll have read/write access to this Calendar. This is the Calendar your coach will use to Add Programs, individual Sessions and you will use to log any sessions performed against these Programs. Your Coach will have access to view your sessions and provide feedback.
Team Calendar(s). If you are a member of any Teams then these Calendars will appear.
Any or all of the Calendars can be hidden at any time by clicking Hide. Likewise they can be made visible by clicking Show.