Submitting 2 NOC as Primary Ocupation

Hi Guys:
I´ve read in different forums positive and negative responds to my question: Can I use two NOCs for my Primary Occupation in Express Entry? Right now, its pretty confusing to me if I can or I cant. If its possible, I would like to know how to submit two different NOCs as my Primary Ocupation, I have already submitted my Express Entry Profile, however, havent been able to submit a second NOC, and in the Canadian Inmigration website there is no information about it, all that I have read comes from Inmigration forums.

I really appreciate any help about it.