If you have a hierarchy of tables of zones you'd like the system to fill first for auto-confirm bookings, you can set this. Let's say you want to fill the main restaurant first, before filling the Mezzanine, or you want to fill the front tables before the back tables.
To set up your hierarchy, go to:
Venues > click on the venue name
Booking Types > click on the relevant booking type
Scroll down to "Areas for this booking type" - this lists the tables that can be auto-confirmed into. You will see a drag and drop cross next to each table name. Use this to drag and drop your tables to set your order of priority