Confirm the actual appointment
Record date, time zone, participants, channel, purpose, and confirmation source. Do not rely on a calendar label that omits the intended time.
Separate reminder from change
A reminder preserves an appointment; a reschedule changes a commitment. Exceptions and sensitive meetings return to the owner.
Track no-response cases
Keep the original invite, attempts, reply, and next permitted action together. An unanswered reminder is not confirmation.