I built a cocktail table, now I need help!! (pictures)

[Sevenlives]

So I built a Head to Head table (cocktail) and my goal is to focus it and load it up with some of my 2d Fighters. I currently have a Legends Core Plus as the "brains" for it and there are a few games that will split the screen for two players. Only about 4 or 5 fighting games however. (Legends core pictured).
It's decent (I got it for 20 bucks used) but I'm making the transition to Launchbox (Bigbox) to add more fighters.

I've managed to get all of my SNK fighters (about 20) to split screen. I'm using Retroarch with the mame_libretro core.  Dip-switches allow me to go on cocktail mode, however even after enabling the bezels, they do not appear, Just black bars. I'd love to get it to look like what's in the picture for the Legends Core, but nothing I do, works so far, 

Any help? I can provide additional info if needed. 

Thanks in advance!

[Sevenlives]

Ah! I figured it out, I had to go into retroarch itself and assign a folder.  thanks anyway!!