How do I install an infant car seat directly onto the stroller frame?

First remove the toddler seat from the stroller frame if attached. Then line up the circular hub of the car seat handle with the seat mounts and insert until it clicks into place on both sides of the frame. Pull up on the front and back of the infant car seat to confirm it is properly locked. The car seat may be installed facing the parent or facing forward. (Pages 19–20)