Originally Posted by madwi

Your window switch controls when the nitrous is allowed to be activated. 3200-6200 rpms set on the switch will not allow spray before 3200 and after 6200 rpms.
Your throttle position switch allows the nitrous system to spray when the throttle pedal is "floored" via either mechanical switch or voltage based.
These are seperate from the tune. Some progressive controllers like the NOS mini progressive have both rpm window and TPS switches built into it.

I would ASSUME that you would want to have a map for nitrous and a map for your everyday driving but I am not sure how others are setup.