I VISA

Hi All,

So I have seen a number of jobs who require you to have an I Visa. As a freelancer assistant producer, how would I apply for an I Visa?
I have been told that I Visas are issued per job and are not transferable, so how can a job require you to have an I Visa?
Also if this is possible, can you get one as an individual?

Any help would be greatly appreciated.

Thanks

Anu