Ford Windstar Owner's Manual page 158

2nd row seat (bed position)
3rd row seat
To convert the seat to a bed:
From the rear of the vehicle, pull down on the release lever
1.
located on the right-hand side of the seat, and at the same
time pull the seatback rearward.
Push down at the top of the seatback until it latches.
2.
Seating and Safety Restraints
157