There are various tabs on the search feature that may appear greyed out based on the search criteria entered. For instance, only the main tab is available until you enter search criteria. Afterwards, additional tabs may be available to toggle the different search criteria, such as the searching subscription site (default), creating a custom report, and searching the public site.
For more information on search features, see Custom Reports or choose from the help menu to the left.
Order Custom Report (1:42)
To try out this feature, use the Search access.