This paper addresses the issue of crowd management in smart cities, where effectively handling large groups is essential for ensuring safety and a positive experience for all. Although smart cities strive to use data for better decision-making, simply measuring crowds is not enough; cities must analyze and utilize this data intelligently. In this paper, we leverage the various experiences of two research groups in this area and present a vision that allows cities to easily establish crowd management platforms by transferring knowledge and insights from similar use cases in other cities.