Make sure you are not opening a duplicate.

• I have searched the issue tracker and did not find an issue describing my bug.

Description of your suggestion.

I think that we should be able to edit what should be allowed and not allows the the back slots. What if you are playing with other mods and want to put them on your back slot.

This would make this mod like a thousand times better. I found it very frustrating how restrictive the slots are. The vanilla offhand isn't restricted at all, every item can be placed and used there. I see no reason why I shouldn't be able to quick-draw bread from my bread holster.

xD bread from your bread holster is a funny one.
Just add the items you want to be able to store in the slots to the respective item tag.
https://github.com/Globox1997/BackSlot/tree/1.20/src/main/resources/data/backslot/tags/items