The producer plays many roles in the filmmaking process, acting as a liaison between the creative and business sides. If the producer leaves during production, other producers take over their responsibilities. It is important for the producer to have a good relationship with the crew. The producer also oversees publicity and protects the director from harassment. The relationship between the producer and director is crucial, and they must share a common goal of making a film they both believe in. They work closely together during pre-production on tasks like casting, crew selection, and location scouting.