A: Hello, thanks for reaching out!

There isn't a setting for this at the moment. The "Limit to" restriction on a booking type caps the total number of bookings per day, week or month, but it doesn't look at who is booking, so one person can still take several of those slots. Worth adding your vote at https://tidycal.com/feedback so the request is on our product team's radar.

In the meantime, two things you can do. To clean up duplicates after the fact, open your Bookings page and search the attendee's email address — that shows every booking they hold, and cancelling the extras puts those slots back into your cap, since cancelled bookings aren't counted against it.

If you need it properly enforced rather than tidied up afterwards, set the booking type to private so it isn't publicly bookable, then use the "Create a booking" button on your Bookings page to invite each attendee individually. Each invite is locked to one specific slot and one specific email address, it can only be used once, and it holds that slot so nobody else can take it while it's pending — including a second invite. The trade-off is that you're driving the scheduling instead of letting people self-book, which suits a capped event better than an open calendar.

If you have any other questions, feel free to reach out to us at [email protected] and we'll be happy to help!