It shares using Shared Memory Media the viewport textures of the parent nDisplay Actor. It should only be added to DisplayClusterRootActor instances, and only one component per instance. The way it works is that the sender generates a unique name for each viewport and captures its texture by getting a pointer to it from the corresponding Preview Component. The receiver will read it using the corresponding media source, and use the Texture Replace functionality in the nDisplay actor viewports to have them used and displayed.