Okay, lots of caveats with Next -Up on the TAC20. It works just like I suspect you want on a TAC50-04. Waits at the parking floor with doors open until a car or hall call is placed, has to be the parking floor though.

On the TAC20 what I said yesterday was correct, LBY and LER is just how you enable parking, then set CSW-14. Car will park, then open doors for 8 seconds, then Next-Up turns off and doors close. You can change the time with NDH but only from 3-30 seconds. You’ll find though, that when you place a car call the doors still stay open for NDH time. NCO defaults to 3 so you have to put in 4 car calls to override Next-Up. You can set NCO to 0 which makes it take the car call immediately but it will not bypass Next-Up for hall calls so it will sit there until NDH time expires before answering the hall call. Maybe okay for a duplex but not for a simplex.

I should have asked how many cars are in the group.