For each Pivot Table dimension, you can configure the label for the dimension, whether to display a summary row or column for the dimension, and rules for refining by the dimension value.
From the Table Layout tab of the Pivot Table edit view, to configure a dimension:
Click the edit icon for the dimension you want to configure.
The Edit Dimension dialog displays.
If the dimension is a date/time attribute, then from the Date/time subset list, select the default date/time subset to display.
By default, Studio selects the largest date/time unit that is available for that attribute.
On the edit dimension dialog, to display a summary row or column for the dimension, check the Enable dimension summaries check box.
Under Label, by default, the summary label is "Summary", and Default is selected.
To provide a custom label, click Custom, then type the new label into the field.
Use the Attribute Cascade section to configure cascading for the dimension.