How do I remove and store the built-in harness to convert the car seat to a booster seat?

Remove harness straps from the metal junction plate and pull them through the harness slots without removing buckles or harness clip. Remove the crotch strap, then push the red adjustment button and pull the strap to the rear of the seat, snapping the junction plate in the back. Store LATCH according to Section 8.2. (Page 29)