The Wireless manager can work with 16 devices simultaneous. After you downloaded and installed the program on your computer open it. If you run it for the first time, you may want to register your projectors. You can skip this step by closing the window. On the main page of the application, press the Option button > Multi View. From there, follow the steps provided on the screen to complete the process. The user manual can be downloaded from the developer's support website.