How to enable a soundcard in djay pro(windows)?

so i just bought djay pro for windows.i have a 2nd soundcard that i wanna use for my headphones(previewing songs) and my laptop headphone goes to the speakers.but i don’t see any option for enabling my 2nd soundcard.All i see is “split output” which frankly does nothing but previewing the song in the same can i enable my 2nd soundcard?

Hello Marven, i have the same Problem!!
You got some solutions ?