This brief describes the use of concept mapping to engage individuals with lived experience in developing a measure of reflective supervision. It summarizes concept mapping and its key steps and presents selected results. It then provides lessons learned and considerations for others interested in using concept mapping to engage individuals with lived experience. Individuals with lived experience can provide essential input into programs, policies, and research, ensuring that they are relevant, practical, and useful. This experience can be personal or professional, coming from caregivers and families or their service providers.  (author abstract)