Ford Windstar Owner's Manual page 157

The seat cushion will move forward when going from the seat
to the bed position.
2nd row seat (seat position)
To convert the bed to a seat:
While in front of the seat, pull the release lever up, slightly
1.
raise the seatback, then push the seat bottom rearward until
the seatback is in the full upright and locked position.
Make sure the safety belts are free and available for use.
2.
The seat/bed should not be occupied while the vehicle is
moving unless it is in the upright, fully-latched position.
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