Expanding the load compartment by folding the seat backrest on the front passenger side forwards
WARNING Risk of becoming trapped during seat adjustment
When you adjust a seat, you or other vehicle occupants could become trapped, e.g. on the seat guide rail.
Make sure when adjusting a seat that no one has any body parts in the sweep of the seat.
Observe the safety notes on "Airbags" and "Children in the vehicle".
WARNING Risk of injury if the seat backrests are folded forwards
Rear passengers may come into contact with parts of the mechanical seat components.
If the front passenger seat backrest is folded forwards and there is a passenger in the car, the passenger must sit in the rear seat behind the driver.
To enlarge the load compartment, you can fold the seat backrest on the front passenger side forwards.
Requirements:
The following seats are unoccupied:
the rear seat behind the seat backrest that is folded forwards on the front passenger side
the rear centre seat
To fold forwards:
pull release handle 
and fold the seat backrest fully forwards onto the sitting surface until it engages. To fold back:
pull release handle and pivot the seat backrest backwards until it engages.