Hey there! @Chicago_user, Thanks for stopping by HP forums!
I understand you don't have an option of enabling beats audio from your monitor.
Don't worry I will try to help you out.
Please provide the product number of your monitor to assist you better.
Even I have checked the manuals according to the manuals you have press Beats Audio control button on the base of the monitor to enable the audio.
I think the monitor you have is a different model, so please provide the product details, So I can check the records and give you accurate details.
Hope to hear from you soon!
Have a pleasant day ahead! 🙂
A4Apollo
I am an HP Employee