The Conductor is in charge of the train, and tells the engine crew when it's time to leave the station, where they are going, any issues that he might know about on the way ("work crew at Milepost 6"). For our normal operations we have the primary "first class" train, and a secondary "second class" train which is usually the Model T railcar. They meet at Alna Center.
For complicated days, such as the upcoming Victorian Christmas, we'll have a dispatcher who's job it is to keep track of where everything is. We'll be running two trains, although only one out on the line at any time.