You mean the "red" engine, the one you jumped into first? I can drop pushers in the train view but of course they just come to a stop and stay put while my player train continues.
I played a few UK scenarios where you are in the banking loco and once you pushed your train to its designed marker and uncouple the train stays put and you bring your banker light engine down to where it needs to go.
Perhaps, once (and if ever) RSC decides to add a multi-player function this kind of operation becomes possible. It would be great for those VORA sessions for sure.
I play Farming Simulator as well, and this game has a multi user feature. I.e. one person drives a combine harvester and others drive tractors and trailers to and fro, taking the harvest back to the farm or bringing it straight to the mil etc. Great fun, as you can sort of dress up and actually see the other player's characters and can have some interaction with them. You can all drive to a pub and have a virtual beer once the harvest is in.
Team playing depends greatly on team work and a positive spirit in all players for pleasure and a good result. So sessions are usually limited to friends and acqaintances. VORA's chief of operations wants all participating players to have passed some qualification for a purpose. You wouldn't want some player with ill intent spoiling all the fun.