all of this is very easy to see in the depth chart/overides tab. Be sure the sets are cleared, and at you main depth chart has one named player at each position (Ifor clarity: a WLB at the WLB, RT at the RT column, MLB at top of MLB column, SLB at top of its designated column.
Then the overrides chart will show exactly where they line up.
Keep in mind if you have a SLB at the top of the MLB depth chart column, that SLB player will show in the MLB position in the override tab.
I don't have the moment right this moment, but if anyone wants me to kick some reference pics I can do that later.
It's too early to be as clear as I'd hoped to be lol.