Every change to an appointment is a hassle, and it's good to be explicit as to why the appointment had to change, so always give a reason.
Unlike an email, changing an appointment will not have the original content recorded, it is a good idea to make it visible by adding the version number to the history. This shows the timeline of the changes and how many changes they've asked for! When we have v7, people will start questioning how this has happened.
Whenever you have to modify the time, attendees, or subject of an appointment, always send the updated appointment with comments at the top to explain why you want to make these changes.
You should add to altered appointments to track this:
Deleted: Meeting has been cancelled
(Bob: V5 - Changed subject as we will be talking about Marketing first)
(Uly: V4 - As per my conversation with Adam, moving to Thursday as he can't make it)
(Bob: V3 - As per my conversation with Uly, adding him in because he wants to know about this)
(Bob: V2 - Changed subject as we will be talking about Marketing first)
{{ APPOINTMENT CONTENT }}
✅ Figure: Good example - Explaining the change that has been made using the version number