Assistant Director / 1st AD
The 1st assistant director works with both the production manager and the director to make the shooting schedule efficient as possible. The 1st A.D. breaks the script down into a shooting schedule and also helps manage the scheduling of talent, crew and equipment needed for each shooting day. This person sometimes helps direct the background extras in a scene.
Assistant Director / 2nd AD
The 2nd A.D. works directly with the 1st A.D. to accomplish their duties. The call sheets for each shooting day are created by the 2nd assistant director. The 2nd A.D. also helps manage the scheduling of talent, crew and equipment that is needed for each day. This person also assists in directing the background extras in a movie scene.