So now installed and I have used.. I think this is a poorly design. The sprayer comes on when you turn forward.. spraying all over the bathroom.. You have to turn handle back for the tub, also hot first.. Wish I had a better understanding.. as everyone that uses the tub.. sprays the bathroom.. it also drips all over  the floor when you place the sprayer back.. I wish I had better researched this product.. and gotten a faucet with a separate lever to turn sprayer on and off.. Would not buy again.. Will probably have to replace this with a better working faucet.