Ford Villager Owner's Manual page 196

Sliding the three-passenger seat
NOTE: When sliding the seat, be sure the middle belt tongue
and buckle are fastened. This will prevent the belt
from falling to the floor or becoming caught between
the seat cushion and the seatback. Keep the middle
seatbelt tongue and buckle fastened when not in use.
Make sure the seat securely latches in the lock position of
3.
both seat tracks before driving with the rear seat in this
position.
Adjustable Rear Seating
199