You will just need to provide them your new address, so that they can send a Notice of Hearing in the mail. Be advised, this does not update your other DMV records. You will need to do that separately.
He just recently changed his last name. Will that be a problem?
No, the DMV will just send him the Notice of Hearing with his previous last name.
IWhat if I'm not certain that the information he put on the traffic ticket is correct?