This article describes our work that aims to support teachers deploying automatically their instructional design, by the mean of patterns. We seek to balance between the need of expressive instructional scenarios, and the technical constraints that occur while deploying those scenarios on learning management systems (LMS). This could be seen as a need of a formal description in order to translate the concepts of a pedagogical scenario, according to those embedded in the LMS. To address this need, we propose a process of structuring formalizing, indexing and finally adapting and operationalizing the instructional scenario. This Process is based on a model of knowledge representation. Different Data levels around the scenario representation as well as the functional essence of educational systems will be presented. We also describe the way this model is structured so that it allows preserving most of the scenarios semantic.