I think i understand
Let's see how the squares will be distributed by the criteria 4 and 5
With the events by teams and individual (Criteria 2 and 3 )are selected 71 players and shortage of 15 to complete the 86 by gender
There is to see how many players of the mixed do not participate in the team event, nor have qualified for the individual test through the criterion 2
Suppose you were 5, who will participate only in the mixed, it will take 10 more players to complete the 86, then 8 players would enter through the Criterion 4 and 2 by the criterion 5
Suppose you were 11 involving only in the mixed, it would require 4 players to complete the 86, then 3 players would enter by the criterion 4 and 1 by the criterion 5 player