The manual presents all the methodological and technical elements included in the Process of Monitoring and Supervision of Performance by Level of Attention. It includes the mechanisms and tools proposed for monitoring and supervising the performance of health services and personnel involved in the comprehensive care of adolescents with an emphasis on SRH. This manual was created for the context of Costa Rica. Likewise, the document describes the approach, the objective, the principles and characteristics of the supervision process, the actors and scenarios involved, the regularity of the supervisory visits, the supervision methods, the supervision visits and the instruments that will be used in these visits. This manual has four methodological guides that include: 1. Methodological Guide for the Group Entrance Interview; 2. Methodological Guide for the Review of Files; 3. Methodological Guide for Critical Incident Analysis or Hypothetical Case; 4. Methodological Guide for the Closing Group Interview.