Buick 1993 Skylark Owner's Manual page 54

Once the special hardware is installed, please follow the
instructions with it and these steps:
1. Unbuckle the automatic lap-shoulder belt by pushing
the button on the buckle.
2. Snap one hook of the infant/child seat attaching belt
near the floor at the door side of the seat.
It will stay on the door, ready to be rebuckled for use
by adults or older children.
53