Ford Windstar Owner's Manual page 175

When removing the second row bench seat:
Disengage the safety belt from the seat by inserting a key or
1.
small screwdriver into the slot provided on the detachable
anchor (see Figure 1). When this shoulder belt assembly is
free of the seat, allow the retractor to wind up the slack in
the belt.
Using the clip attached to the end of the shoulder belt, clip
2.
the end of the belt to the stationary portion of the shoulder
belt (see Figure 2). The end of the shoulder belt must be
clipped in order to keep it from striking anything during
vehicle operation.
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