The seats have a latch located on the outboard side near the top of the seatback that enables the front seatback(s) to fold forward.
To fold the seatback forward, lift the latch and push the seatback forward.
Caution: If either seatback is not locked, it could move forward in a sudden stop or crash. That could cause injury to the person sitting there. Always push and pull on the seatbacks to be sure they are locked.