When invoked to configure an audience block, the Audience Block Builder contains General and Outputs tabs.
The General tab is documented elsewhere in the Audience Designer documentation. An additional property is exposed:
•Audience: you must configure the block with an audience file. You can browse for an audience, or populate the property using drag and drop. You can also initiate the creation of a new audience. Having selected an audience, inline Open Latest Version, View Insights and Clear buttons are displayed.
The Outputs tab displays a read-only list of the nested audience’s outputs. You cannot add, delete, re-order or apply filters to the outputs. However, you can configure metadata in respect of each output.