Medicines are important for well-being. Thus, medication errors can have severe consequences, even death. Transfers between professionals and levels of care are a challenge in terms of medicines management. Norwegian governmental strategies encourage communication and collaboration between levels of care, and several initiatives are invested in to improve digital medicine management. In the project Electronic Medicines Management (eMM), we established an arena for interprofessional discussions about medicines management. This paper provides an example of how the eMM arena contributed to knowledge sharing and development in current medicines management practices at a nursing home. Building on communities of practice as a method we carried out the first of several sessions, with nine interprofessional participants. The results illustrate how discussion and agreement were reached on a common practice across different levels of care, and how the knowledge required bringing this knowledge back to the local practices.