Hi,
To run small drop-in workshops with multiple people (1-5 people), it would be great to utilise the 'Book with me' page whereby you can set a max number of people per booking timeslot.
For the customer booking an appointment for themselves, they could see timeslots and a small indication group booking status similar to MS bookings (e.g. 1 seat available OR 2 of 3 seats booked).