Is there a way to create scenarios where you switch out cars in the yard or run a local job? In the Journey, I've been doing them but as to Scenario editor, I don't see a way to set just a fleet of cars on a specific track.
That is not possible in the scenario-editor at this time. Hopefully shunting operations is something that will be included when the scenario-editor gets updated to v2. But don't expect this any time soon. I think it'll take a good while.
I haven’t tried to yet but I was wondering if I could send a bunch of AI trains to a yard and then switch out cars once they arrive