We have 7 different registration forms for an event (because RE doesn't allow discount codes) and we need to cap the event at 90 people. I can't control which form someone uses, but if I set them all at 90 then 630 people can conceivably register. I want the "event capacity" number to count everyone who registers (attending) across all the forms, and turn on a universal "we're sold out" message (editable) for all the forms once that capacity number is reached. This could also be solved by having discount codes.