i need to know how to put the bottom of the backseat to stay latched in i cant figure it out to save my life.I looks like theres a clip in the middle but it wont go in????im lost need help

you just push it in, try sitting on it real hard where the latch is

mine had 2 black plastic clips, when i pulled the seat up, they stayed in the slot, i had to remove them from those slots, attach them to the seat, then push the seat back down, pushing the clips back into their appropriate slots,