So, Microsoft doesn't document this, and good luck figuring out why, but "grouping" doesn't happen for the meeting organiser. They are always handled separately from the other participants. This is why your handler is never called. Try the meeting with 3 people under the same policy and you should see that handler being called. ;)
Bot Compliance Recording Grouping not working
Julian Masero Suarez
0
Reputation points
Hi Team,
incomingCall.ParticipantJoiningHandler and incomingCall.ParticipantLeftHandler events not raised when processing 1-1 calls or meetings.
Microsoft.Graph.Communications.Calls, version 1.2.0.5304.
ICall.AnswerAsync(mediaSession: mediaSession, participantCapacity: capacity);
Testing with some values for 'participantCapacity' parameter: 100, 200, 1000. The ICall.ParticipantJoiningHandler and ICall.ParticipantLeftHandler are never raised to bot app.
Please help.