Train load/unload is kinda unclear to me

[Dix Dark]

I have a train with 2 cars, one for Quartz and another for Bauxite.
I want the train to fully unload any one of the cars and go get fully loaded again, but although it says "Locomotive should stay until wagon is fully loaded/unloaded"(it doesn't say "a single wagon", nor does it say "all of them"), it stays on the station until both cars unloaded, and that's not possible due to Bauxite being consumed at the 300% rate of quartz, so the train stays there indefinitely and the production stops.

Then, if I choose the option "stay until one load/unload", the train starts to ride in circles even if there is only one single unit of one single item can be delivered, which is just plain stupid.

So, am I doing something wrong, or the train logic in this game just isn't complete(I really hope so), and for now I can't do what I'm trying to?

(yeah, I played Factorio, loved the train system there, it has pretty flexible settings and with logic gates you can do whatever you want)

[dead_pooljake]

theres a expanded setting at the station termanals

[Numbers]

You can also dump the excess quartz into an awesome sink so that the car can empty.

[Dix Dark]

Originally posted by dead_pooljake:

theres a expanded setting at the station termanals

I don't see any expanded settings... could you post a screenshot?

Originally posted by Numbers:

You can also dump the excess quartz into an awesome sink so that the car can empty.

I'm too greedy for that, also I have PTSD from Factorio :|

For now I set them on "fully unload or wait for 5 minutes", but I don't like it.