This paper presents a method introducing Agile practices in project planned methodology in the context of a multidisciplinary product design. These multidisciplinary products can be Mechatronics or Cyber-Physical-Systems. Various design methodologies and types of project architecture already exist. Some of them are focused on a micro-level, whereas others are on a macro-level. Our proposition is focused on the macro-level. Agile and project-planned methods are presented and analyzed before looking at a possible hybridization. Hybrid solutions already exist, but this paper formalizes a project architecture to combine the advantages of project-planned and Agile methods and to describe the relative PLM position.