In a Pack, the sign-off responsibilities are delegated to the adult Den leadership and parents. In a Troop, this may be delegated to senior (First Class rank or higher) youth with adult leadership oversight. This position of the Instructor in a troop is part of the youth leadership corps. Each unit has its own protocol. The following recommendations of what ScouterStan has seen that works.  

The Troop Youth Instructor Recommendations: 

  The Troop Instructor teaches Scout Skills using the EDGE method. The youth can also sign-off on non-adult leader requirements up to First Clase rank. The Scoutmaster should make it clear to youth instructors that they only sign-off on skills they have taught or witnessed. No backdating.  

🌎 Online Guide to Advancement:  https://www.scouting.org/resources/guide-to-advancement/ 

🎬 Troop Leader Resources 'Instructor':  https://troopleader.scouting.org/instructor/