how to use the rebook functionality in the Resource Scheduling app

I need to know how to use the "rebook functionality" from the Bookings tap in the RS app. Whenever we have a change of a resource, the app will not allow the change from one resource to another--in this case, user to user. The only way to remedy this is if we create a new Booking with the new resource and then delete the original Booking. This is a waste of time and efficiency. How can we make the change work successfully?