Bezels - Overlays

Hi, I'm a new user of RetroBat but have some experience with RetroPie. I am used to defining veiwport dimensions and adding bezels in RetroPie, especially for systems like Atari Lynx where a few games are in portrait mode. I was able to use Bezel project and then overide some of the bezels that I wasn't happy with as I ended up with a good understanding of where all the files are and what the order of priority was. My problem in RetroBat is that I cannot find my way around the file structure to the location of the .cfg and .info files that I will need to edit or override. Can someone explain to me how where in the file structure I should be looking and what, if any, order of priority exists? Thanks.