To set up client rescheduling;
Go to Menu
Click Booking system
Click Client rescheduling
Turn on the toggle to Enabled
Click Save
Click on Allow rescheduling up to, to select how far in advance you'd like to let your clients reschedule
Select the rescheduling time frame using the + and - buttons
Click Save setting
Note: When a client requests to reschedule their appointment, they can enter a reason for the reschedule. They can also specify if they’d like to keep the original time of their booking or cancel the appointment if you decline their reschedule request.