Instructions
Stand up two panels, one next to the other. One side of each panel has two clips (one on top, one on the bottom) and the opposite side is a post -- align the post of one panel with the clips of another.
Push the panels together and interlock the clips and the posts. Snap the posts of one panel into the clips of another panel to join them together.
Place a nut on top of the post that joins the two panels and tighten it to secure the panels together.
Repeat this process with any additional panels to enlarge the area of the Play Yard. Shape the Play Yard as you wish.