How to put in extra sleeping methods on VRBO?

On VRBO how to list extra sleeping methods like in common area sleeping futons and air mattresses? I didn’t see anyway to put in common area, only add bedrooms. Also if I have 3 beds in the house plus 2 air mattresses, can I count air mattresses as as beds? So I can list 5 beds instead 3?
Thank you for your advice.