The first phase in new product development process is a specific phase. It is a phase of project definition. It is also a collaborative decision making phase. In this phase the project objectives are to be defined and thus it is very difficult to manage this phase with classic project management tools. In this paper we propose a new project management tool structure. This tool was developed upon the collaborative decision making information capitalisation in order to structure and organise this phase. The necessary information in this tool is identified by a model developed using the systemic approach.