Hi,
I was referring to this part of your original post:
My question was a little unspecific to be honest 
I wanted to know where exactly you looked to get that information.
I did a somewhat lengthy writeup of how the different mechanisms/parts of downloading and managing repos are intended to be used here. You should be able to simply sync the packages and directly use them from there, though. It is not the “usual” setup (and Katello might be a little overkill for that task), but it should still work.
Regards