I suggested some drastic measures but throughout the discussion I realized that it's unfair to punish managers who are busy sometimes or have a valid excuse not to attend certain games at certain times but no body can convince me that a manager have so many valid excuses not to watch more than 50 % of their games !!!!!!!!!!!!!!
T.E. is encouraged to improve the timing of matches and allow managers to chose the best timing for their local match like they do in association which would give them no more excuses for being absent.
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So instead of being narrow minded to criticize the idea of punishing an inactive manager or a manager who fails to attend 50% of his league matches, you should request from T.E. to improve the draw by making it relevant to geographic location of managers and their time zone and ask T.E. to give managers certain choices about the best time for them to play their home game.