I assume you have the two seats not the bench seat?
1) release the back of the seats using the catch on top of the seats.
2) I find it easier to remove the head rests. Fold the seat forward.
3) when the seat is flat, there is a handle in the back of the seat base. Pull this handle. The seat should pop out of the brackets.
4) lift the rear of the seat up and forward. The seat should lift up and off.
Refitting the seat
1) locate the seat in the front brackets. Pivot the rear of the seat down.
2) push the rear of the seat base down. It should click into the sockets.
You may kneel on top of the seat to get it to click into place. You may need to pull the handle while kneeling on the seat.
3) when base is located lift up the seat back and click into place.
Job done
I hope this makes sence lol
Cheers
David