Can I set different Group Sizes per Slot for different Appointment Types?

This feature is available on Individual, Professional and Teams plans.

Maximum Group Size is set up on a booking page level and will apply to all open slots on that booking page. There is not currently a way to set up different units per appointment type on the same booking page.

The best workaround option is to set up two different booking pages. This will give you more control over the size of the group for each appointment, the calendar event details, and confirmations.