To add more units to your listing, go to Properties and select the listing you wish to edit. Scroll down on the sidebar menu (beneath your property photo on the left) and click "Split Property into Units." Click the "Add New Units" button.

A pop-up will appear, asking how many units you want to create. The contents will be copied from your main property if you currently only have one unit. If you have more than one unit, it will ask you to select which one you'd like to copy. The description, amenities, pricing, and settings will be duplicated.

You can then name, edit and publish these units as you did for the main listing.