Oil was changed but light is not going out on 1999 Oldsmobile Alero

I know there is a trick to getting the oil light out but I can't find it. Some one said it was the fuse panel but I can't even find that. Please help me with this. Thank you.

Asked by for the 1999 Oldsmobile Alero
with the motor off and the key on, depress the accelerator pedal to the floor 3 times and wait till the light blinks and goes out.