The Invisible Practices project looked at what skills and organisational supports are necessary to allow CP practitioners, specialist DFV practitioners, justice services and family services practitioners to work well with fathers who use violence. Invisible Practices was an action research project that involved a whole-of-family approach called the Safe & Together™ Model. The project harnessed practiceled knowledge at five geographic sites in Australia. In each area, an interagency community of practice (CoP) was established, and these CoPs were supported by consultants from the Safe & Together Institute. This practice guide is based on the learnings that emerged from the CoPs.