Capturing 2nd monitor

[Ika]

Hello, I have a problem where OBS isn't recognizing my 2nd monitor. I have tried to find an answer on how to make it visible, but the closest I got to an answer is that both monitors need to be connected to the same GPU, but mine are not. My main monitor is connected to the GPU, but 2nd monitor is connected to the Integrated graphic card because it is old and I was too lazy to go and buy an adapter to be able to use it on GPU, so I just plugged it in my motherboard. Is there a way