Dodge 2010 Ram Truck Owner's Manual page 182

2. With the side gates open, position the extender so the
outboard ends align with the intended slots in the sides
of the bed.
Aligning Gate To Slots
3. Rotate the side gates closed so that the outboard ends
are secured into the intended slots of the bed.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 181
4. Rotate the center handle horizontally to secure the side
gates in the closed position.
Side Gates Closed
5. Lock the center handle to secure the panel into place
and assist against theft.
3