Josh18,
I don't know about the CIS board, but my son has a principal nomination and it just shows up on his online application status as "nomination status: received" If you're wondering whether one or more of your 3 nom's is a principal nomination, the best way to find out is to check with the primary staffer in the MOC's office that actually handles the nominations. Good luck!
you can also kick out an email right from the Candidate Portal requesting they confirm the nomination info...probably have a reply by tomorrow