[Jeff Rodriguez]

Originally Posted by Team Update 19

Pit Crew: During the elimination rounds, extra team members are often needed to move team robots from the team's pit station to the queuing area and onto the playing field. For this reason, each alliance team is permitted to have three (3) additional "pit crew" members who can also help with needed robot repairs/maintenance.

To me, that reads three additional people per team, for a total of nine per alliance.