Star and Life Ranks..."For Star and Life ranks, a Scout must perform
six hours of service to others. This may be done as an individual
project or as a member of a patrol or troop project. Star and Life
service projects may be approved for Scouts assisting on Eagle service
projects. The Scoutmaster approves the project before it is started."
It just says "Service to others". I couldn't find anything more specific, except for Eagle.
Hoping someone else has more info.