Cinematographers

Hi, I would like to change a credit on a TV Show produced by the company I work for. In the cinematographer field are shown two names, but one of those is the second unit cinematographer and it shouldn't be shown there, It should be shown just as in the camera department. I have tried to change that information by deleting it, but when I get to  update that page there is no way I can delete that credit. As it is said in that page: " Only the person credited as the main cinematographer or director of photography should be submitted here. Usually one person holds this role. Additional or second unit cinematographers, camera operators and other cinematography related roles should be submitted to the Camera Department. Looking forward to your answer.