Im glad I only wasted a buck on this
When you launch the app, theres no way of knowing how it works. So you choose the Help menu, you got to a web page, and you find some help. The app there looks nothing like what I downloaded. After clicking around a bit, it turns out that the help is for the version sold directly, and the Mac App Store version doesnt have all the same features. (Not the developers fault, but still; they should have help for the MAS version.)
Im not wasting my time trying to figure this out. Its only a buck.
kirkmc about
NetSpot: WiFi Analyzer