F1 visa questions!!!

[eagle2020]

Hi,

I have a relative who is trying to obtain an F1 visa from Dubai where he works as a script writer. He is trying to go to the US to study broadcasting and get only an associate degree so it can help him in his career..so I have few questions:

1- Will it be helpful and can he mention in his interview at the US embassy that he will be writing scripts to his company(which he gets paid for) while being in the US?

2- Does he need an f1 visa if he tries to apply to a vocational school? or does he need another type of visa for the vocational school?

Thank you very much for answering!!