Completely lost

Hey y’all, I’m new to Kodi and just recently installed the Amber skin. I can’t actually get to the skin settings? It’s greyed out under appearance. I read on a forum that they’re on the main menu? and I found it once, but I can’t seem to get back? I’m trying to set up my home menu vertically, and I can’t and it’s super frustrating. Any help would be greatly appreciated for this Newbie! Thanks