Document Type Group Custom Queries limit searches by the selected Document Type Group(s). In the Configuration module, select Queries | Custom Queries, select the query you wish to configure and click Document Type Group Query. Add the Document Type Group(s) by which the query will be limited.
To further limit your search, select Retrieval Keywords to include in your Custom Query. The Keyword Types that are available for selection are the Keyword Types that are common to all Document Types in the Document Type Groups that have been selected for the Custom Query.