The first thing would be to familiarize yourself with the components of action as described by the PYP. Quite simply: choose, act, reflect. And continue to do so, embedding this reflective, action-oriented culture into your classroom experience.
This may require you to think about changing the way you "do" school or what your classroom experience looks like. If that is the case for you, the following resources may be helpful in moving you toward an environment that prioritizes agency and makes room for action:
Guiding Elementary Students to Help Their Community (Minero). Emelina Minero shares how project-based learning impacts student voice and choice and leads the way to choose-act-reflect on learning by individuals and groups.
How to Empower Young People to Build Their Own Future: A Conversation with Ayele Shakur (Shakur). The CEO of Build.org shares how her organization uses entrepreneurship as a vehicle to engage students in learning and in their communities.