How to make Bluetooth headphones appear in Sound Output I have a new pair of Cowin bluetooth headphones that work just fine with my iPhone but when I connect to my Macbook running Catalina Beta they don't appear as an option to choose for Sound output/input. Is there a way to force them to appear?
Basic solutions:  


Try restarting your device ;  
Try disabling and enabling Bluetooth back ;  
Try resetting your Mac Bluetooth cache ;
Check this answer from this question.


Hope I helped you.
Léo