categories are a way to group similar events so that they can be viewed separately.the color coding in calendar makes it easy to track events from different categories when all events are shown. for more information on categories, see “categorizing applications” in chapter 4.
to categorize an event:
1. select the event you want to categorize.
2. tap details.
3. tap category pick list and select a category
4. tap ok.
to edit a category or create a new category:
1. select the event you want to categorize.
2. tap details.
3. tap category pick list and select a edit categories
4. perform one of the following:
(1) to edit a category, select a category and tap edit.
(2) to create a new category, tap new.
the edit category dialog box opens.

5. enter a new name and select a color.
6. tap ok.