screw the floor leveler into the lower post
mark in the post groove for the desired height, then install the split sleeve onto the groove.
slide the shelf with the botton end down along the post until it slides over the sleeves.
after shelf is in place, lay a piece of cloth on the corner of the shelf and hit it with a rubber mallet to make it clamp tightly with sleeves.
Repeat step 1 2 3 for the second shelf.