When you set up the event, you can enter the max # of attendees per timeslot.
If your attendees equals 1, this means the customer will select a time and check out without adding attendees. One attendee takes up one timeslot
If your attendees are greater than 1, after your customer selects a time they will be prompted to add the number of attendees they wish to bring to the event
How do I set a minimum attendee?
On the event manage page, you can set a minimum attendees in the bottom section called Advanced Settings
How do I set a maximum across all bookings?
On manage event, you can set a maximum of attendees per timeslot.
Now each time a customer books with you, they will only be able to select up to the maximum of your attendees
For example, say you are selling consultations from 12:00-14:00 (2 hours). You offer 30-min timeslots, and each timeslot carries a max of 2 attendees. This way, each day you can accommodate four timeslots x 2 attendees = 8 per day
NOTE: Make sure that on your product, don’t track inventory