If you want to have the class in a different schedule than the one you booked, you can change it. Keep in mind this is only possible with the same class, you can not change your booking for a different class.
Go to "My bookings" section on the top right corner.
2. You will see the Upcoming section with all your future bookings. Find the one you want to reschedule and click on Manage booking and then Change date.
3. You can now click on drop-down menu and choose the new date.
4. Lastly, click on Update booking.