Creating secondary indexes
You can create one or more secondary indexes in the Manage Indexes dialog box.
Choose Structure|Manage Indexes to display the Manage Indexes dialog box.
Click the New button. The Define Index dialog box appears.
Select fields from the Additional Fields select box and click the arrow to add each one to the fields Of Index Key box. The double-right arrow adds all the fields at once.
Choose Ascending or Descending order, and click OK.