The Duplicate function enables you to duplicate the already created audience. Click on the "Duplicate icon" in the Action menu on the right side of the Audiences list.
The "Duplicate the Audience" form will appear.
Set the Audience name and Audience description.
Set the Consent types criteria. You have an option to create comparison group that enables you to create testing audience for your campaign.
To save your preferences, click on the "Save Audience" button.