[ctvpa]

On mine you just put your hand under the lip of the middle of the bottom of the back seat, and give it a lift up. There is actually a place under the seat to put your jack and some tools under there.
The back seat frame fits over some lips in the rear of the car. I have seen a screw holding it down on the bottom, but most times once you get the bottom out, you can lift the seat back up & off the frame.