How do I change the harness position as my child grows?

Push the harness anchor located on the back of the child restraint through the slot to the front of the seat shell on both sides, then pull the harness strap and anchor to the front. Pull the entire harness system through to the back, then choose the appropriate slots for the new harness position and push the harness anchor, buckle tongue, harness strap, and chest clip through to the front. The shoulder harness straps should always be as close as possible to, but never above, the child's shoulders. (Pages 39-40)