Simplify the following text for a Grade 11 native English-speaking person.
Original: For an official to be inducted to the Hockey Hall of Fame , they must be retired for a minimum of three years and must be nominated by an elected 18-person selection committee .
Simplified: For an official to be added to the Hockey Hall of Fame , they must be retired for a minimum of three years and must be nominated by an elected 18-person selection committee .