List the job names in the film industry?

im thinking about working in the film industry. can you just list the name of the job and tell me what the job does. oh and can you tell me if they work while the movie/ tv show is being filmed. i want to be able to work on set while the actors are shooting their scenes. hope you understand what i am saying.... show more im thinking about working in the film industry. can you just list the name of the job and tell me what the job does.
oh and can you tell me if they work while the movie/ tv show is being filmed. i want to be able to work on set while the actors are shooting their scenes. hope you understand what i am saying.

Thank you for those who helped.
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