Director- Tells everyone where they should be and what they should be doing.
Vision Mixer- Controls what is on the screen. For example, cameras, pictures, pre recorded videos etc.
Teleprompter- Controls scrolling text that talent reads out loud.
Camera operator- controls camera
Floor manager- Passes on directors orders to people in the filming area.
Talent/Presenter- Acts and reads script.
Sound mixer- Controls all sound levels.
Sound effects operator- plays sound effects and music when the director tells them to.