slide the item left -right sides in inventory?

$$anonymous$$, In inventory , when i move and put away "x" item to "y" item; I want "x" replaced that slot (instead of "y") and "y" moves right or left available slot automatically. How can I do that? Please..

In inventory , when I move x item to y item I want y item and rest of items w$$anonymous$$ch is from left of it glide one slot left (include y) I dont want change x to y and y to x