Ford Windstar Owner's Manual page 165

Figure 3: Removal and installation of the second and third bench seats
Be careful that the latches are not damaged when the seats are
stored.
To install the seat assembly:
Clear the area of debris around the seat floor attachments.
1.
With the seatback in a folded and latched position (except
2.
for bench seats equipped with built-in child safety seat),
place the seat assembly in your vehicle. Tip the seat
assembly forward and engage the front seat hooks onto the
forward attachment pins in the floor wells.
Rotate the seat downward and engage the latch into the rear
3.
floor attachment. Lifting of the latch handles is not required
for installation.
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