I mhave a steam loco on a lyaout whose job is soely to haul coal from a minje to a coaling tower, refill the tower, return to the mine, wait 20 minute on a siding then do it all over agian, so far, so good. HOWEVER what I als NEED the loco to do is evry fifth trip, decouple, proceed to the water cloums, stop, refill, proceed to the coaling tower, refill her tender, recouple to the train then resumer her roginal schedule, waht combination of rules can I use to do this?