This document discusses the development of an Electronic Performance Support System (EPSS) to support blended learning design in higher education. It describes a collaboration between several European universities aimed at analyzing existing blended learning models and research through case studies. The goals are to develop new blended learning models and an online community/support system for sharing ideas and best practices. An overview is provided of the participatory design process used to develop the EPSS, including creating user scenarios, conceptual models, user stories, and prototypes.