Using mot bay to do a VHC

We couldn't do any repairs on our MOT ramp, our class 7 pit or bike bay during the on demand hours. I'll admit that I had to go and look to check, but I can't see an option when changing opening hours to have "on demand" or "bookings only" specific times. I used to have on demand at the less busy times and by appointment only at the busier ones - first couple of hours each weekday and weekends for example.

It's just a blanket opening times option now on MTS (both AE and site specific) - I'm not sure there is even an option now to have an on demand/pre-booked differential any more. Maybe it's been lost in an update? There's no requirement to have your opening hours (and hasn't been for a few years) on the official MOT board.

I'll ask the question.