How do I set up the Pack 'n Play playard?

First, disconnect the straps holding the mattress pad and remove it. Pull up on the side rails in the middle above the push button until all four sides are locked, then check that the top rails are rigid. Hold one end of the unit and push the center of the floor down until locked securely into place. Finally, place the mattress pad with the soft side up and fasten the four snap straps on the corners around the tube at the bottom.