Hi @Katherine04543 - Thanks for reaching out!
Unfortunately, Calendly does not include this capability that allows you to Book & Pay for bulk events like this. Right now, Group Events require a booking to be made each time to take up a slot - So this would require multiple bookings to track how many slots are taken up for a given event.
If you or someone on your team is more handy with configuring API, we do have some calls you could make that could allow you to track this information more efficiently, but the specifics of setting this up is a bit over my head.
If using the API to do this is a possibility for you, I’ve linked some relevant information below:
Getting Started: https://developer.calendly.com/getting-started
Our Full API reference: https://developer.calendly.com/api-docs/e2f95ebd44914-get-event
I’ll leave this thread open to see if anyone else has any ideas!