When a contact books an appointment and receives the RSVP email, we want to ensure they respond to confirm their attendance. If they accept the RSVP, the appointment in the owner's calendar should automatically update to reflect their acceptance. Currently, when a contact accepts or declines the RSVP, the owner is not notified. The owner's calendar states, 'You have not requested responses for this event.' However, we want to ensure that a response is requested and that the owner's calendar updates accordingly