The Junior Assistant Scoutmaster is another position of leadership. The Junior Assistant Scoutmaster is at least 16 years of age who has shown outstanding leadership skills may be appointed by the Scoutmaster to serve as a junior assistant Scoutmaster (JASM). The junior assistant Scoutmaster functions just like an assistant Scoutmaster (except for leadership responsibilities reserved for adults 18 years of age or older).
The main responsibility of the Junior Assistant Scoutmaster is:
junior assistant Scoutmasters (a troop may have more than one) follow the guidance of the Scoutmaster in providing support and supervision to other youth leaders in the troop.

Other duties of the Junior Assistant Scoutmaster are:
- performs duties as assigned by the Scoutmaster.
- sets a good example.
- wears the Scout uniform correctly
- lives by the Scout Oath and Law.
- shows Scout spirit