On May 5th and 6th, 2022 the RItrainPlus project hosted the workshop “Design Study Workshop, A European School for Management of RIs (ESMRI)”, at the University of Milano, Bicocca, Italy. The workshop explored conceptual, legal and financial requirements to establish a European School for Management of RIs (EMSRIs) awarding international academic certificates. On a broader scale, this included the exploration of different angles to consider when working towards professionalising training related to research infrastructure management. Invited speakers present about ongoing initiatives, past experiences, and best practices allowing to gain an in-depth understanding of the field. Aspects such as accreditation, course focus (knowledge, skills, methods, governance, and management practice within RIs), course delivery, training sustainability and specific exchange programmes were covered.