This document outlines the plan and approach for a PhD that aims to embed children and young people's participation in health and social care service settings. The goals are to understand how participation is defined and operationalized, what it means to embed participation, and what is needed for participation to be meaningful, effective, and sustainable. The researcher plans to conduct qualitative research through action research and critical inquiries in case studies. Key influences discussed are children's rights, citizenship, and participatory approaches. Models of participation and involvement are presented. The researcher is navigating relevant policies and locating their work within theories of participation, children's rights, and action research to guide the inclusive PhD journey.