I'm not sure what I'm missing or doing wrong, still (maybe I just haven't had enough coffee yet
)
How would my icons be under a different page? Right now I just have the "Inventory" page and the "TestPage" object within that. All the custom UI's I have seen follow basically what I'm using now. The Default UI has "AutoInventory" within "GeneralPage" within "Inventory".
Sorry if this is already explained somewhere, but I haven't been able to find the info yet (obviously) and the UIBuilder docs I know are still in the works.