This publication provides guidance to governments, civil society organizations (nongovernmental organizations and community-based organizations) and other partners implementing HIV prevention, care and treatment programs with key populations. This guide is designed to assist these programs in the development of monitoring systems for frontline workers (such as peer outreach workers, staff outreach supervisors and program managers) to understand performance. It includes comprehensive tools and forms that various levels of staff can use to collect and analyze data to manage and improve a program.