I copied this from balouza's post..hope this answers your question.....
""TDs should try their best to get the minimum Players required to start the Tourney and must never register before the Tourney Start Time, and only when a Hero is needed. Therefore, if more 4+ Players are registered in a 2x2, this will not be considered as Hero. However, there are 2 exceptions to this rule:
TDs can play in ALL their Weekly (Multi-Day) Tourneys at the same time, and with whatever number of registered Players.
TDs will be allowed to play in All Events hosted by them including ELIC, Decathlon, EDS and Olympics. All Events Minimum Tourney Requirements will remain as they are now.
Still the TD should register as last Player, so the system will not boot any other Player for even numbers.''