Selecting Nested Categories
If you add a nested category to all rows or
columns in a level using a long bar drop zone, all changes apply to
all occurrences of that category.
For example, in the following report, sales regions are nested under products. When you select a sales region, IBM® Cognos® PowerPlay® highlights all instances of the category.

Because all occurrences of the category are selected, any action you perform on one occurrence such as moving, removing, and formatting applies to all occurrences of that category.
If you used short bar drop zones to add more than one instance of a category, you must select each instance separately to apply a change.
Graphic: select.gif