This paper focuses on pedagogical scenario building process in cMOOCs. We aim to offer solutions to support teachers in the design, deployment and adaptation of such courses. To achieve this goal, we propose a generic cMOOC oriented pedagogical scenario building process. In adequacy with cMOOC aspects, this process allows to describe learning environments' elements, roles and pedagogical activities in this massive, open and connectivist situation. Moreover, the proposed model is generic in the sense that it allows to create scenarios regardless of a particular context or domain.