Booking lead time should exclude weekends

We have a class/clinic that meets each day at noon. We require that bookings be made at least one day in advance so that appropriate staff will attend the clinic. This works fine except for Monday bookings. Since no one seems to check their email on the weekends we would like to require bookings for Monday be made no later than Thursday of the previous week. Does anyone have an idea for how to achieve this?

@biostatclinics Currently the weekends are counted in the minimum booking notice. I will get this added as a feature request to ensure that unchecked days are not counted for the minimum booking notice. In the interim you would need to setup a three day minimum notice to accomplish the Thursday booking for Monday. More info here