What is the proper way to secure my child in the Graco infant restraint?

Move the handle to sitting position, open the harness clip by squeezing both sides, and unbuckle it. Place your child in the restraint and pull the harness straps down over them. Buckle the harness to the latch between the child's legs (you should hear a click). From the back, pull the strap through the harness tightener to tighten, ensuring both straps are flat and tight on the child's shoulders. Finally, snap the harness clip pieces together and position it in the middle of the chest, level with the armpits and away from the neck.