It's not easy to do. You need so use some kind of Latch to switch between the wait and fill states.

For this specific problem, it's easier to just middle-click the cargo wagon inventory and reserve slots for each item.

But can it be done? I don't mind a little work to get it just right. I am ...

Screenshot didn't post for some reason.

Hello, I am new to the form and have spent a little time looking for my answer through youtube and the form here as well.

That being said I was unable to find a source that had what I was looking for.

Basis-

I have a 3 chest [Requester Chests] each asking for 3 different items from the logistic ...