So I went ahead and made it so you can select "ALL" or specific items from an Item Category. So therefore, you could have one box for AKs, and Bolts and another for Bows, and Crossbows (or whatever).
The logic is simple. If you have an item selected it will only sort that item or items. If you select the "'categoryname All" button it will override those selections and instead sort all of those category items...
It will make more sense when you try it.. lol