I bought a "Shower only" setup but they sent me the "tub AND SHOWER valve". I have the rain can showerhead that comes from the wall which will be connected to it's valve...valve has 4 ports...1 obviously for hot and cold, third for showerhead...and I was thinking the fourth, which would normally be the tub faucet diverter, could be used for the handheld shower instead. Now...I still need to think about the best way to tie in the second rainfall showerhead we plan to have coming down from ceiling. I was going to buy a lever diverter valve to which we could attach the second rainfall showerhead. with this diverter setup...would both showerheads be able to function at the same time and also seperately at will? or would it just be one OR the other.

what is the best way to set this up so we have the option to have both showerheads going at the same time OR just the one with diverter option to handheld?