Can I use iGPU and dGPU display output at the same time?

Hi guys, I am building a portable hackintosh machine.

It has 10400 and RX560 LP VGA.

I want to use triple display setup but RX560 LP VGA only got 2 display I/O.

So, I need to use one display I/O on MB which is run by intel iGPU.

Is there anyway I can use both GPU at the same time?