With this setup you can do a set extension with AR that have different object and the LED screen have dedicated Unreal server
          
 
                    
                              In this setup you have 4 or more server, One for Smode and the 3 or more other for Unreal, they are all connected together via the network and via the quadroSync card for Genlock
                              The first Unreal Server is for rendering a Back and the second for rendering a Front+Key
                              The 3rd ( and the next ) are for rendering the frustum to the LED screen directly ( like in a InCameraVFX setup )
                              To setup the Unreal server you can start by using the InCameraVFX config that you use on your LED screen, and then add the 2 server ( node ).
          for that you can follow this: 
                    Unreal Color Viewport
                    Render a Unreal Color Viewport for Smode to use as Back and/or Front
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                     for the first node and then another 
                    Unreal Color Viewport
                    Render a Unreal Color Viewport for Smode to use as Back and/or Front
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                     in a second node with a 
                    Unreal Key
                    Render a Unreal Key for Smode to use as Alpha Layer
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                    , all in the same nDispaly configuration.With  this config you should have 3 node or more in the nDisplay config
                              The screen Placement and orientation need to match in SMODE and Unreal for that you can read:
                    Stage and Screen Orientation
                    SMODE / Unreal 3D orientation matching
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                              After setting up Unreal you can setup 
                    How-To Unreal In Smode
                    How to integrate your Unreal content inside Smode
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