Then slide the slider to indicate how many and how big of upsets to choose (if doing a random bracket).
The default in the middle uses the system's real probabilities.
Then generate a bracket by hitting one of the buttons:
Random = Use my system probabilities to randomize picks.
Favorites = Force pick all favorites according to my system.
Perfect = Show the actual bracket from that year. If generating a bracket for the
current year, this shows a perfect bracket to the current point, then simulates
after that.