Why can't I change my triple screen set up in game?

As the title said, trying to setup my triples with bezel free kit and I can't line them up properly. I have to exit in game to go back in the menu options and tweak and do it over again and over again. Also, the settings are so confusing, there is an offset for the center, left, and right. If you change the center and change an offset on left or right it will double up. It's so confusing.

Also, I cant change the steering wheel angle when I'm in game. WHY? Most frustrating UX for this sim.