Using Classic Outlook on Windows for personal email, calendar, and contact management
This solution does not work in the 'New' version of Outlook calendar - there is no way to add or remove participants without notifying the entire participant list - which is impractical when organising large events where participants are added and removed all the time.
I will also need to switch back to the old version for now - any new enhancements are far outweighed by this important functionality not being there anymore.