Digitrax help please

[scootergoebel]

Getting things closer to figured out. Have a dt 100 control hooked to universal reciever ur91 thats hooked todb150, have a ps515 ckass 2 supply and a 6607 transformer. I repaired track that runs room to room in celing after a accident involveing a car going through wall in garage.I have voltage at tracks. I have new and other engines im trying to get going. New has decoder installed. Able to set location, cv65,66,67 on a program track. All selected and read good. How do i dispatch the train and others? I think im supposed to dis connectthe dt100 from the ur91 and hook to db150. I can only run 1 engine at a time and wuestion do i really need a confusing dcc set up. Used to be able to plug a teain in and move transformer one way or other and it worked. I get that the sounds and effects are cool but for now the nephue who drove through garage years ago wanted to see the train go around the room for xmas. Well maybe this new year?