At the click of a button, you can now stop taking bookings for an event or class and switch it to 'Waiting List Only'. The event still appears on your booking widget, but the only option is for people to join the waiting list.
This is really handy when you are giving your current customers a 'priority window' to book. Now, instead of showing nothing on your booking page while you do this, you can let people join your waiting list while you are giving your existing customers the chance to book first.