Hello, channel meetings are a bit special so to fetch the tracking status for example you need to enter the channel meeting object in the channel to see accepted or declined etc. To use invitations with responses (i.e normal scheduling behavior) you'd have to use a standard scheduled meeting and not a channel meeting, because the channel doesn't have an own mailbox.
You can subscribe to the corresponding group mailbox, for replies and scheduled events though. You can reach those settings from the Outlook client - Group settings or Outlook on the web - Groups - Settings
