On the general settings page, I can select different options for “Clients can book appointments up to [X] before start time”. However, I don’t see any option for “zero hours” or something similar that will allow clients to book an appointment right before start time.
I’m using this plugin for room reservation, so there’s no need to limit clients in this way.
Is there custom code I can use to override this? It looks like you helped someone solve a similar issue previously, but you didn’t make the code public. https://www.birchpress.com/forums/topic/advance-booking