how to turn on fog lights??

how do you turn on the fog lights? I've got a 2001 Sable LS Premium sedan. The light switch looks like its got one more notch to turn to with the symbol for fog lights, but that light doesn't light up at night. The Fogs don't turn on with the head lights either, though the symbol kinda looks like they should. I havn't torn into them yet, hoping maybe just the bulbs are bad, but both at the same time??? Is there a seperate fuse for them?

found out, you pull out the light switch when turned to lights on manually. Lights dont turn on though??? The fog light light on the switch lights up, just no fog lights, any ideas?