The Centre for Continuing and Distance Education (CCDE) of the University of Geneva has initiated and experimented the segmentation of their supporting service in terms of digital transformation of continuing education programmes as well as staff training with a “Three-Level” solution, consisting of the “easy option”, the “intermediate option” and the “advanced option”. Guided by the Design-Based Research approach, we have not only redefined the objectives for each option but have also improved the staff training from only workshop-based format to self-assessment plus workshop format. In this article, we present the two design cycles of the “Three-Level” digital transformation as well as the digital competence training model in detail and share several concrete examples for staff training.