Film Crew Hierarchy
Within the film industry, there is certainly a set hierarchy.
It's important for anyone starting out in this business to understand the roles and responsibilities of everyone that exists on a given film set and who reports to whom.
Now there are two groups:
Above the Line and Below the Line
Above the Line: Creative development of the film; roles such as the Producers, Directors, Cinematographers/Director of Photography, Screenwriters, and Talent.
Below the Line: Those who are responsible for the day-to-day filmmaking involved in pre-production, production, and post-production. Departments such as Camera, Electrical, Grip, Production Design, Costume and Makeup.