Recently I am sending my clients a confirmation of changes in the status of the appointment. This is most conveniant through the 'send reminder' section of your software. Therefore, after changing the appointment to 'cancelled', I go to 'send reminder' then look for the notification that informs my client about the new status, and 'send'.
Maybe it is easy to implement some code that asks me to inform the client about the change? Or, 'always inform client after status change'. Or, 'always when an appointment goes to cancelled, send out a confirmation'.
But maybe this is hard to implement, and then it is not worth it, because it allready works great - just like all the rest of clinicoffice