Complex sentence: Any member of the President's Committee who takes part in the managing of four events attains the title Steward of the President's Committee and will, from the Division of Easter Full Term 2008, become elligable for membership of the External Committee.
Split into simpler sentences: Any member of the President's Committee who takes part in the managing of four events attains the title Steward of the President's Committee. Stewards of the President's Committee will, from the Division of Easter Full Term 2008, become eligible for membership of the External Committee.