How do you fuse for tenkaichi 2 for the gc controller?

on the wii system, what buttons do you press in order to use fusion.How do you fuse for tenkaichi 2 for the gc controller?
you mean fusing Z items; buy the item from the store that allows you fuse items; then find the right 2 powers to fuse and press the Z and A button. This is for the Wii version.