How to control 2 operators at the same time

Hi

I’m stuck on a question “how to control 2 operators at the same time”, so I want to know if there is a possibility to control 2 humans with one “Human Transport Controller”. I want to know if there is a possibility to control 2 humans with only one “Human Transport Controller”. I want to make them work at the same time so that they take one part at a time (as if they help each other to take the part because it doesn’t deserve another transport).
so if you have any suggestions i would be grateful, thanks in advance.

best regards

-Ness