Like jasoncap we are also experiencing issues with the attendees. We are trying to use the booking system as a hot desk solution, allowing our users to book out a slot at a particular office and floor. Despite setting the number of attendees to greater than 1, as soon as the first attendee books on the bookings page, the availability is gone, despite the booking showing '1 out of x seats have been booked'. It's as though it creates an appointment in the 'Staff' calendar and then sees that member of staff as busy and doesn't allow any subsequent bookings. I have even removed the option of 'events on office calendar affects availability'. The only solution I have at present is to create a member of staff for each hot desk per session and assign them to the relevant service. It's rather annoying, I am gathering this is a bug, Any suggestions Jessica_Wilczek ?