Porsche Boxster Owner's Manual page 36

Sports seat/adaptive sports seat only
The seat belt can be fixed to the seat backrest
with the retaining strap, so that it can be reached
more easily for buckling up.
f Release button J at the top of the retaining
strap, insert the seat belt and fasten the strap
once more.
34
Operation, Safety
Sports bucket seat
f Do not install a child restraint system in
the Sports bucket seat.
The Sports bucket seat cannot be equipped
with the LATCH system.
A Fore and aft adjustment
f Raise locking lever A.
Move seat to desired position and release
lever.
Ensure that the seat engages correctly.
B Backrest
Folding forward
f Pull loop B in the side part of the backrest and
fold the backrest forward.
Folding back
f Tilt back and engage the backrest so that it
cannot tip forward when the car is braked.