Opel COMBO Owner's Manual page 60

58 Seats, restraints
Pull latch plates with the belt out of
belt holder in the roof.
Insert lower latch plate into left-hand
buckle (1) at the centre seat. Guide
the upper latch plate with the belt over
the lap area and the shoulder (do not
twist) and insert it into right-hand
buckle (2) at centre seat.
To unfasten the seat belt, first press
the button on the right-hand buckle
(2) and remove upper latch plate.
Then press the button on the left-
hand buckle (1) and remove lower
latch plate. The seat belt retracts
automatically.
Using seat belts while pregnant
9 Warning
The lap belt must be positioned as
low as possible across the pelvis
to prevent pressure on the
abdomen.