What is another name for sub-director?

Answer 1

undertaker

Answer 2

Someone who directs; someone who is in charge. It has a different meaning in different contexts. In a corporation, it is one of those who sit on the Board of Directors, the governing Board of the corporation. In a play or movie, it is the person whose artistic vision shaped the production; the person in charge of telling the actors how to play their parts, how things should look etc.