I want to draw prefab over another cloned prefab

I am building a board game, The board itself is a gameobject and I am cloning the players prefab using c# script.
I want to know how can i display a new prefab over the previously spawned clones on mouse click.
I am new to unity,but have enough programming experience.
Can anyone please help me out

just instantiate a new prefab in the same position as the old prefab.