The Aggregates Drawer lists the Aggregates currently defined in the Project as a list of Aggregate Cards.
From here, you can add more Aggregates or interact with the existing ones.
To add a new Aggregate, click on the Add Button 
. This will open the Create New Aggregate dialog.
To edit or view details for a specific Aggregate Instance, click on the Edit Button 
on the respective card . This will open the Aggregate Details dialog.
Selecting a Connector Card will update the Aggregate Assets with the list of assets for that particular Aggregate.