https://rsvpproplugin.com/managing-attendees-across-multiple-events/
Managing Attendees Across Multiple Events - RSVP Pro Plugin
Jul 4, 2019 - Recently a person asked how the RSVP Pro plugin could handle the case where you had thousands of attendees, and each attendee should only be able to RSVP for...
managing attendeesevents rsvpacrossmultiplepro