1. He only signs Part I now, and takes part II to the interview.
2. Since I am going to act as his Agent, he should send the DS230 and all other forms back to me once signed, and I will send everything to the NVC for him when the time is right. When the Interview rolls around, he'll need the original Part II to take with him, as well as copies of anything else they require/request.
Am I right?
Thanks,
JenM