To Set Up ViewControl for NDI® Select the NDI® stream that is coming from the switcher that has the MultiViewer video stream. Note: Refer to the documentation that came with your SDI to NDI® Converter for information on setting it up. Click the button. Click Update NDI Source List and click the NDI® source that has the MultiViewer output from the switcher. Note: The MultiViewer must be set to one of the NDI® layouts for the NDI® source selection to be available. Click Save.