Linux multi-monitor fullscreen mode with a single Quadro GPU

I have a real-time visualizer Vulkan Window which I would like to span in fullscreen mode over all 4 screens that I attached to a Quadro P4000 GPU.
I tried to follow the instructions in the below link to enable mosaic mode

However, I couldn´t generate a virtual monitor that is visible to Vulkan application. Could you please direct me the relevant instructions to achieve the full screen Vulkan window visualization on Linux multi-monitors.?