Dual monitor function need support display adapter support two monitor at least. There are two work modes you can select to start dual monitor function: stretch mode and extend mode.
After you connect two monitors to Hybrid NDVR system, enable the dual monitor function, Hybrid NDVR will start this function automatically.
Use stretch mode, you can do:
1.In preview mode, when the number of view windows you select is smaller than the total number of cameras, then the remaining cameras will be displayed on the second monitor automatically,Also,
when you double click one window to zoom in it, other cameras will be displayed on the second monitor. When all the cameras are shown on the main monitor, no camera will be displayed on the second one.
2.When you are in playback interface or setup interface,all the cameras will be displayed on the second monitor automatically.
Based this work mode, you can setup 16 cameras image show onto the second monitor at most, and you can't do any operation on this monitor, it is only use to view.
If you want to get more information of dual monitor function, please download dual monitor manual click here