This can be set to close either X amount of minutes, hours or days before or after the booking start time, or set to stop at the booking start time.
You'll be able to find this functionality by going to:
Once closed, the option to request a payment or authentication will be removed:
Any customers attempting to make a payment or authentication will be advised that deposits are no longer being taken for this booking:
To see a video tutorial on Venue Group - Payment Availability, please click here and watch from 01:45 - 02:47.