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To delete an appointment or a set of appointments, all I need to do is go to Appointments → Appointment Lists → Cancelled and select the appointments I would like to delete using the left hand checkboxes:
After selecting the appointments I want to delete, I just press the Delete button at the top of the Cancelled list view:
Status button with the arrow pointing down located at the upper left.
This will display a confirmation window where I can confirm that I'd like to delete the appointments I selected:
The deleted appointments will then be moved to the list of deleted appointments, where you can re-open them by selecting any of them and clicking the Undelete & Re-Open button:
