Categories are a way to group information types together. In order to create information types, authors must create one or more categories for grouping them.
From the File menu, select Project Settings.
Click the Information Types tab.
From the list of categories (lower-left), select the one to change.
Click in the Category text box (upper-left) and edit the text.
To change its classification from Inclusive to Exclusive or Hidden, click the option that applies.
Click Change to update the category.