What to do at auditions?
Ask the director/producer what they expect.
In my college, the SM would be responsible for getting everyone's paperowrk filled out, calling people into the room and keeping auditioners updated on what was going on time-wise and reporting to the director aboutwhether another actor came late, or had to leave by a certan time, etc. Basically just running around and organizing paperwork. In my company we had a set auditon form that we used for every show, but you might be expected to make one. You may also be expected to print and post the cast list and/or contact the actors.