I've managed to figure out a few things through trial and error.
-How to swap characters
-How to get to the place to sell weapons, show skills, and level up characters
-How to get to the badge menu
-How to remap the buttons
Everything else I have no idea what they do or how to even find them. I don't know what the apothecary potions do this time around and I don't know what the settings are.