From the Dashboard, select the desired display type (Staff, Resources, Events) from the mini-Calendar. Click the Arrow icons to navigate to the desired appointment date.
Click the desired Booking to select.
Mouse-over the Actions icon next to the Appointment details field to reveal the menu.
Click Cancel Booking.
Click No, Just Delete to cancel the Booking. Click Yes, Please Email to cancel the Booking and send an email to the Customer notifying them of the cancellation.