Multitrack edit audio to video, Output video to monitors

I've done some searching online and on Adobe Community but have not found any answers.

Is there a way to route video to an external monitor when using Audition? I want to be able to have clients in the edit suite and watching the "big screen" and also hear the mix I am doing in Audition. The edit suite system is set up with BlackMagic DeckLink 4K and can output video to multiple monitors when using After Effects, Premiere or Resolve. However, when using Audition, it doesn't seem to be able to send video to the DeckLink 4K. I would love to be able to route the video playback in Audition to external monitors. What is the recommended way to do this?

Otherwise I seem to have to have clients sit at my desk looking at my computer monitors. Not the greatest user experience.

Thanks for any tech advise on this.