I am traveling to Shanghai with my two grandchildren

both 13 years old who will be attending camp for one week. I am applying for Visas for the three of us. My granddaughter and I live in New Jersey but my grandson live in Virginia. I plan to go to the to the Consulate in New York to apply for the Visas, because he lives in Virginia will they be able to process his even if I have all of his required documents?