2.Assemble the two sliding rails (A5&A6) to the desk board
set, and tighten the bolts (B7) and screw pads (B6) with the
internal hexagon wrench (B3).
3.Adjust the drawer with the sliding rail under the
board,(aimingat the installation holes) and tighten up the
bolt (B12) with the internal hexagon wrench.