Show calendar event changes in invitee's activity view
When a new meeting is scheduled with attendees in Teams, none of the attendees are actively notified (in Teams). At some point, the attendee may get an email notification, or may discover the meeting when viewing their calendar, but nothing else.
When a meeting is created (or updated), add an "activity" notification to each of the attendees that will direct them to the calendar event.
(note: we do not currently use any other Office365 product, so relying on another application like Outlook to notify attendees is not a viable solution. Teams should be capable of standing on its own in this case.)