How do I secure my child in the Graco car seat using the 5-point harness?

Loosen the harness straps by lifting the harness release lever while pulling out the straps at the chest clip. Place your child in the seat with their back flat against the car seat back, place the harness straps over their shoulders and buckle them (you should hear a click), then adjust the harness height so the straps are at the proper level for your child's size. Tighten the harness by pulling the harness adjustment strap until it is snug with no slack, and position the chest clip at armpit level. (Pages 33-36)