https://vimeo.com/115197277
Here's a video of how it's used. I skimmed it because I didn't want to watch an hour and a half of training, but it looks like only sisters who met that PNM would score her in between rounds and then the scores would be tabulated and used however the chapter needed them.
I can't speak to security, but I am amused by the thought of Russians trying to hack a sorority PNM election, so to speak.