This capability is in beta, and subject to frequent updates and modifications without notice. Audience Destinations is based on Adobe Experience Platform and requires a specific configuration.
Please reach out to Adobe Customer Support if you plan to implement this capability.
This video explains how to activate the Data Services Query Audience within a workflow by using the Read Audience activity.
Activate an Adobe Experience Platform audience in a workflow (02:37 min)
See the product documentation on how to ingest Adobe Experience Platform audiences into Campaign