you need to make a session for a route in Surveyor, otherwise you will see the route but there won't be an engine, train or a driver.......
"Consist" is American speak for train (=coaches, wagons etc).
Go to Surveyor, choose a route, using the tool from the right hand side like an engine wheel to choose and add an engine and, say, coaches or wagons, place on the track, then go to Quick Drive. Best way to learn is trial and error, save your new session under a different name, even "test 1" or somesuch, so you don't risk messing up the original route or session.