Click the three dots next to the listing you would like to export a calendar from. Click Edit Listing.
You will be taken to an overview of your listing.
On the left-hand side, click Availability Settings.
In Availability Settings, scroll down until you see Sync Calendars. Click Export Calendar.
A pop-up will appear. Here is where you will find your Calendar URL. Copy and paste this link into your other booking calendar.
If you'd like to sync your calendar from another booking site, here's how you can import your calendar.