Hi Jesse,
Excellent question! The Events Calendar does indeed allow you to set an “organizer” for each event, but unfortunately, the calendar will not send any notifications to them.
Another idea would be to set the author of the event post to someone and then allow them to log in, download the attendee lists for their events and then use those to communicate with their registrants directly.
Does that sound like a possible option? Let me know if you have any other questions here and I’d be happy to help as best I can. 🙂
Cheers,
Geoff