Thanks Mike,
So there are 2 double ended tracks for trains, 7 single ended tracks for car storage, and then an actual loco and caboose tracks the number doesn't matter as long as they will hold the equipment at the mole, is this correct?
I think I know where you are headed but I can't wrap my head around how.
I think I can make it work with a few changes.
I would start with:


A) Locations
1)Mole arrival
2) mole departure
3) mole yard
4) engine and caboose would be part of mole yard


B) track type and name
1) name) arrival would be staging so that would activate the take feature
2) name) departure would be staging same thing take all
3) name) yard needs set to be set either yard so the load status changes or I/C if you don't want to change loads;make sure the 7 yard tracks won't accept loco's or cabeese?
4) name loco)??loco track only accepts loco
5) name caboose) caboose track only accepts cabooses.

this should take care locations track names track type restrictions
does this work so far

my next question is this a manned location during operations and do you want that crew to have something to do ie be the rest of the world
like on mine it is not manned during ops it is manned by the road engineer does all the work switch crew and locals don't get that far I have a short mainline ( heavy on switch jobs) so this equalizes the work load
but is manned during solo ops because there is no one here to play

I am doing this in pieces cause I'm still working out details

Matt G