Remember that this is not a first come first serve type of situation. If there are exactly 16 participants within a specific gender, they will all participate. If there are over sixteen  sign ups within a specific gender, a random drawing will be done to determine the participants.
It's for me to know and for you to be kept in the cold darkness of my wonderful mind.
Okay no...If we get enough females, I will break it down the advancement brackets to be lower.
Ex: If we get eight  females, it becomes six  advance to round 2, four  advance to round 3, and two  advance to round 4.