The two winners of each semifinal, which are played tomorrow morning, will grab the first two spots. Every other player who has played in Stage 2 will then play against each other in a new knockout stage, Stage 3, over Saturday and Sunday. The two semifinal winners of Stage 3 will grab the third and fourth spot, and for the men there will be a 5th spot-playoff between the two losing semifinalists.
The seeding for Stage 3 will be based on how far players came in Stage 2.
You can see how the schedule is for Stage 3, which as mentioned, is played Saturday and Sunday:
schedule_3_guimares (4).pdf