1. You need to make sure that you have created a new available schedule of the time you are moving the appointment to, for example in this case, we have added a schedule for March 12 at 11:00AM:

2. From the booking, click on the "edit" button against the booking:

3. Click on the "change time of this booking" button:

4. Where the system would allow you to choose an available time on the calendar page:

5. When you have chosen a time and date, the system would show the message that you have successfully moved the customer to the updated time and date:

***If you need to move an entire class or multiple customers at once, kindly see link below for reference:

http://help.flexbooker.com/getting-started/how-to-update-a-booking-time-and-date-for-an-entire-class-or-multiple-customers-at-one-time-using-a-fixed-time-schedule

Did this answer your question?