I just bought a 2014 f-150 xlt and I'm missing part where the back seats are and trying to find out what all I'm missing to try to replace the missing part

This what that back seats area looks like i have the seat in a safe place so they don't get damaged the dealership I got the truck from is order the bracket for the seats

 

That’s the jack and tire tool kit location on extended cabs

 

Yes your seat bottom hinges up on both sides.
I have one picture of my 2013 supercab.
Notice the lever to raise the small section of the rear seat and it locks in the up position.
The driver side is the same. I'll see what I can find.

 

I pulled this up from a 2013 manual but should help you.

 

Honestly, you really need to take more pics showing what you already have in your possession installed so that rest of us can see what is missing. Because looking at this pic it looks like the whole lower portion of the rear seat is missing. But you say you have that?