Why cannot you send a couple of trains from main station to the second station or more, both arrival and depart please send info how it works with 2nd, 3rd, 4th and 5th station.
GreenYarnYoshi
https://forum.pixelfederation.com/trainstation/d/39553-how-to-use-my-2nd-3rd-4th-and-5th-stations
Read the pinned thread at top of this section.