For those still looking.
ParkingLot Maker4-0 (Written by Mark Beauman)
I did not make this part nor claim to have. I just figured out how to add the parameter for counting the parking lots in scheduling.
I enabled this function under group (Parking2_2_sp0) already there, and moved it to the listing group. And it works fine for scheduling.
Hopefully, the 'maker' will just implement this in his next update.