Allow clients to change appointment type when rescheduling?

Hi there,

I offer a variety of types of walking tours. I offer clients the option to reschedule their tour on their own, and sometimes they want to change tour type in addition to changing the date/time. The different tour types have the same price.

Is there a way to permit clients to change their appointment type when they reschedule? I did not see an option under Availability>Global Scheduling Limits.

If there isn't, is there a way to request this feature?

Thanks in advance!