Aggregate Connector 
The aggregate connector joins multiple template queries into a single data set.
You can combine 32 query templates into a single aggregate data result set.
You use the aggregate connector when you create an aggregate query.
The aggregate connector is an internal system connector and is enabled by default. You can assign permissions to the connector. If you do not use aggregate queries, you can disable the connector.
The Aggregate Connector has the following modes:
ModeList
Returns the names of the supported modes
Query
Returns the result of the aggregate query
When you run an aggregate query, the Server parameter must be set to AggregateConnector. The SourceTemplate, SourceName, and SourceTransform parameters combine the results.