Cyber-Physical Systems (CPS) are systems that link cyberspace with the physical world by means of a network of interrelated elements (sensors and actuators) and computational engines. These different assets make it difficult to design properly and effectively with them all. Additionally, the designing of CPS requires multi-disciplinary project teams and the investigation of all activities which CPS should perform. The cooperation of specialists in only one area is often difficult. One can easily imagine what problems arise when designers from totally different fields have to cooperate. The designers have to share their knowledge and experiences, and to identify assets and activities which are necessary for the proper CPS functioning. Attention has to be paid not only to the process itself, product models, requirements and constraints, aspects of analysis and synthesis, automation tools, and the wider contexts of particular issues but also to the identification of design activities (performed by human designers) and requirements related to them. The proper identification process of the CPS activities allows to improve the design process through more precise and problem-activity-dedicated knowledge and activity-design models management.