My third answer is that a stage manager must be clear and consise when giving well thought out directions.
When I was working on Avenue q, the stage manager did a really great job with keeping everyone busy doing productive work that would help the show as a whole.
I got a lot of help from the lecture on youtube. I also got help from my mentor ship with Avenue q.
I believe that this will be a very helpful answer to me because it is a more elaborate form of communication.