Increase USE inventory slot unlock capacity

Slot Transparent Images inventory slot png Hello, I'm just started with VS and I need some it possible to put several items in the same slot of the inventory? inventory slot The starting size is 18 slots, and the current maximum size is 81 slots There is also a trash slot that will destroy any items dragged into it,

itemku higgs slot png There is still the N1 problem and I want the two smaller slots lined up so that they less of an OCD nightmare