This document provides an overview of key roles and departments in film and TV production. It describes the main responsibilities of creative roles like the producer, director, and screenwriter. It also outlines production roles such as the line producer, production manager, assistant directors, and production assistants. Additionally, it summarizes roles in departments like script, location, camera, sound, and grip. The document organizes roles by their level of seniority and areas of responsibility to give a sense of the production process and team structure.