From the DEC site:
Adult mentor must be licensed to hunt big game and have 3 years of big game hunting experience.
Adult mentor must maintain physical control over the junior hunter at all times while hunting. This means the mentor and junior hunter must be close enough to talk without the aid of a radio and must be able to see each other.
Both the junior hunter and mentor must remain on the ground while hunting; you may not use a tree stand or hunt from an elevated platform.
Both the junior hunter and mentor must wear hunter orange visible from all directions: shirt, jacket or vest with at least 250 square inches of solid or patterned orange (the pattern must be at least 50% orange) OR a hat with at least 50% orange.
Frequently Asked Questions about the Youth Hunt and Junior Hunter Mentoring Program
Q: Can both the junior hunter and the mentor carry firearms during the youth deer hunt or while hunting deer or bear during the regular season?
A: During the youth hunt, the mentor may not carry a firearm or bow to pursue deer; only the youth may have a firearm for deer hunting. During the regular or muzzleloader seasons for deer or bear, both the mentor and the youth hunter may have a firearm to hunt deer or bear.