In the movie "The Adjustment Bureau" , it was never revealed who was "The Chairman".
1) Was The Chairman God? When Norris asked "Are you angel?" Harry said "We have been called that". So this implies they might be God.
2) What was "The plan"? Was it some sort of paper where fortune is written by the God?
3) What was the office of the bureau? Was it heaven?
I could not find any answer to these questions.