The follow-up is where the relationship actually is
For most organisations the hour itself is a small part of the value; the morning after is where supporters decide whether the invitation was worth accepting. The registrant list carries statuses, so you can see who came and who did not, and you can send a message to a chosen segment. That is where the briefing paper, the recording, the reading list and the next date go โ all as links you supply.
Before the session there is less to manage than teams fear. Confirmation emails go out on their own with the attendee's access link, an .ics calendar file and a Google Calendar link, and reminders arrive at twenty-four hours, an hour and fifteen minutes ahead unless you switch them off. Export the list as CSV or PDF when the trustee minutes need a number, and keep the names for the next briefing rather than starting cold again.