I have set up an O365 group primarily for use of the shared calendar and its utility on our office SharePoint site. I have set members of this group who are allowed to submit events to the calendar. Nobody in the group needs to receive invitations when an event is submitted. I know that individually each user can adjust their settings for the group, but is there a way for me as group owner (and O365 admin) to centrally set "Don't receive any group messages" for all members of the group? To be clear, "Send all group conversations and events to members' inboxes" is unchecked.