The Junior and Teen Leadership Reports are completed by intermediate and senior members.
"To meet the Star Rank criteria for gold and platinum stars, you must hold significant leadership roles that require 20 hours or more of leadership contribution. Count all of your trainings, meeting, planning and research hours as well as the hours spent leading the activity or event. You must complete the Leadership Development Report form to receive credit for these roles." - 2015 Record Book Manual
To learn how to fill out a LDR, click here