To Create an Extended Search

Select File > New > Report.
The New Report tab opens in the Content pane.
Enter the Code and Name for the search. The Description is optional.
Set Report Type to Extended Search.
Click the Open Report Designer link.
The Report Designer window opens.
Define the parameters for the search and click Save. You are returned to the New Report tab to finish creating the search.
(Optional) To link this extended search to a quick search, click Query Reports, then drag a quick search from the search results into the Extension of Quick Search field.
This specifies which extended search to display when the quick search is expanded.
Click the Add icon in the toolbar to add the new search to the community.

Note: You will be prevented from saving the extended search unless at least one search parameter (whether mandatory or optional) has been defined.