Using a Master Application Concept is key to creating effective reports in this feature so that all the XML names match in all your applications, and the same items can be pulled into the institutional report per those matched XML names.
Only Sections that have the same XML names will appear in the adhoc builder. If you do not have an application marked as a Master Template and have not use a Master Template concept to clone all your other applications you will not be able to use Institutional Reports.