Very easy procedure.
Just need a 10mm socket.
Pull up on the carpet flap (retainer clips like the ones found in the door panel)
Remove 10mm bolt.
Remove bungee ties holding the carpet to the seat.
Remove the push in plugs (black) Easier to do with trim puller but its doable with some good ole force.
Grab your vacuum and get ready to get rid off all those candy wrappers your kid has been stuffing behind there.