Those people are needed behind the scenes of the movie. It's like a director planning a screenwriter or something, and then explaining the main work of these people in detail. thank you

Let's take the novel adaptation of the film as an example, in the order of the usual commercial production process: (non-plagiarism answer)

The original-the author of the novel

Producer-the manager of the investor, or the investor himself, or the representative of the bag company. He found the novel.

Producer-investor, either the producer himself, or the producer's boss, the person who pays the money.

Director-employed by the boss, responsible for film production, directing performances, art and technology.

Screenplay-adaptation of a novel into a script

The executive producer-or the production director, manager or assistant of the producer, coordinates all people, finances and materials and transmits information between the crew and the producer.

Actor-Needless to say, the director has more power to appoint actors, but it is not absolute.

Photography team-the main photographer and his assistant, obey the director's arrangement.

Art group-lens group, effect style and so on

Lighting group-closest to photography group

Recording group-in addition to live recording, it is usually responsible for later music and sound.

Wardrobe attendant

Stage attribute

Make up/make up/make up/make up/make up/configure/make up/make up (a bed)

Smoke and fire

Action directors-also known as action directors-will be found in martial arts films and will be responsible for the action part of martial arts.

Recording-belonging to the director group, responsible for recording the serial number, number and content of the film.

Assistant director-also called deputy director and executive director, the director's handyman is mainly responsible for running errands, finding extras, and contacting financial and publicity people.

Audience seats-service personnel, moving equipment to sweep the floor and pour water. ...

Post-director-responsible for post-effects, maybe the general director himself.

Editor-post-editing technician

Mixed sound

3D special effects-if any.

Medical care, transportation-if any.

Finance-if any

That's about it. My hands are sore. I hope it's valuable.