Yes, you attend the appropriate meeting for whichever group you're assigned to. Mandatory attendance for the general rider's meeting, then Intermediate group and Novice group split off and do their own group-specific meeting. Everyone attends the general rider's meeting, whether you are a first time rider or hold a Moto America license.
I will admit it can be tough at times when working with some guys that might have done a track day or two with another org then start in Novice with us. However it poses far more of a safety hazard to put someone that doesn't belong in Intermediate group than it is to put an Intermediate rider in Novice. An Intermediate rider will be able to safely set up passes and get by the majority of Novice riders. Unless we mutually know someone that can vouch for your ability, you'll more than likely start off in Novice. Trust me, it's abundantly clear if you're I group material.
We run it this way because if we had a dollar for every person that said they were Intermediate or Advanced material and were indeed not, well...I'd be a rich man.