Representative listings on Vrbo means that you have multiple similar units and all of them work with the same rate and the total availability of the listing is the sum of the calendars of all the units.
Vrbo is compatible with this kind of listing, so just set up your structure on Stays and enable their sending from the [Channel Managers Dashboard > Vrbo > Settings > Vertical rate groups] menu, checking the [Grouped] option on the fields of your choice.
For listings of this type, Vrbo has some content restrictions, so before proceeding the registration this way, it is important to check if you meet the requirements. I want to know more...