In addition to having a completed application, proof of citizenship (certified copy of birth certificate), and a 2 inch by 2 inch photo, both parents must be present for minors.
For passports, a minor is anyone under the age of 16 at the time of application. Both parents must also have their driver's licenses with them at the time of application. If both parents are not able to be present, an affidavit must be filled out from the absent parent and signed in front of a notary. The affidavit form is available in clerk's office. A copy of the front and back of the absent parent's driver's license is also required.