91 on left, 82 on right
When you work with multiple LNB's they go opposite of the way they are in the sky. In the sky 91 is west of 82 but with multiple LNB's the signal bounces off the dish and hits the LNB opposite of their way in the sky. So thats why 91 is to the left of 82 in this case
yes
it works with any set of multiple LNB's
here is an example of my Toroidal T90 dish. Yes the LNB's face different but the principle still applies. the closest LNB is 119 and the farthest away is 72