Please explain further...

By this, do you mean a limit on the number of times a customer can move?

And does that mean moving 1 specific appointment multiple times or just moving it in general? For example, can the customer move a 'cut+brush' up to 3 times or can the customer move 'an appointment' a total of 3 times? Or, for example, move up to 3 times within 1 month... Seems interesting, but I would like more info:)