Just wondering if there is a comprehensive guide on the shelf system that is perhaps a bit more in depth than just the manual. I find the shelf system in Substance Painter very opaque and frustrating: inability to edit paths while a project is open seems very odd, and even thought I've pointed it at my own folders to use for shelves, it doesn't seem to update when i put new content in them. I'm just wondering if I'm completely missing something here, some paradigm/thought process on it that would make it make more sense? A little illumination here would be very appreciated. Thanks!