@Terrie55 Sorry what are you asking? Are you saying you have your property listed on another site also with a calendar?
If so, go to your Calendar and then settings. at the very bottom there should be Connect Calendars. You can link to other Airbnb listings, or other website. Typically the other website will also give you a link to use to connect.
You got a response from Chad that might be helpful to try and understand what issue are you dealing at the moment. Are you maybe wanting to connect other calendars with your Airbnb one?