1 - Remove toilet seat from the bowl.

2 - Place support bracket on toilet hole. Then insert hex-head brass fitting through the hole.

3 - Now place washer and nut to secure Bidematic in position.

4 - To center Bidematic properly, push in lever all the way to have arm shower in the center of the bowl.

5 - Place the plastic spacer on the opposite hole.

6 - Once Bidematic is centered, proceed to firmly tighten nut onto brass fitting; then put toilet seat back on.