In 2022, an international conference was held focusing on ‘participation’. We shared current evidence, identified knowledge gaps and worked together to understand what new knowledge and community and practice changes were needed. This brief communication is a summary of the conference delegates' discussions. We present the key assumptions we make about participation and propose what is needed to create change for societies, communities, families and individuals. While we have some robust evidence to support participation approaches, more is needed, and it is everyone's responsibility to build an inclusive society where participation for all is the reality.