 Within each chartered organization , there may be one or more " units " . A unit is a group of youth and adults which are collectively designated as a Cub Scout pack , Boy Scout troop , Varsity Scout team , or Venturing crew / Sea Scout ship . Each chartered organization may charter as many units as it wishes , but usually only 3 or 4 ( one unit for each program level ) . The BSA council provides the leader training , inter @-@ unit activities , camping programs , volunteer and professional support , and insurance coverage . Units also create their own activities ( such as monthly camping trips , outings , or service projects ) , and most meet weekly at the place of the chartered organization for youth to learn basic skill development and practice leadership in small groups known as dens and patrols . 
