Never done it on this car, but if it's like 95% of the other cars, push on the front of the seat towards the rear of the car and downwards. It should pop up, and then you can slide it out.
Fast - 1991 Syclone #1616: sold
Project - 1992 Typhoon #0014: in the works
Ugly - 1986 Omni GLH-T2: 202 HP, 243 TQ, 14.150 @ 98.74 MPH
Wifey's - 2006 SS S/C: