Many research libraries in Europe deliver Open Science services in the field of RDM and OA. However, it is estimated that up to half of European research libraries deliver only limited services in these domains. LIBER and ADBU conducted a study to understand the organisational structures and competencies needed to create, and sustain, these services. As part of the report, a Toolkit will be created (in both English and French languages) to encourage an acceleration of the adoption of RDM and OA services in research libraries throughout Europe.