How do I do it?
If u don't know I will explain
So if I go to a shop and equip any unit it will appear on other UI, I mean the UI that we use to play, then if we equip other unit it will show on other unit place, and if u Unequip its will Unequip on the highest unit like if u have unit in A and B and u don't have anything in C the B unit will unequip like this :