How do I cancel an instant booking?

A guest has just made an instant booking and then told me that her group will be 10 people.  The legal maximum I can accommodate is 8 so I need to cancel her booking.  How do i do this?


On the reservation click on the Cancel reservation button.  The guest has to confirm.  You cannot just cancel it yourself.  Maybe you should update your setup so you can only take bookings for 8.