You can specify the default measure for crosstabs and certain chart types. Specify the default measure to be used when the measures cannot be determined by what is on the edges. For example, you create a crosstab with Order method as rows and Product line as columns. You add Quantity and Revenue as nested rows, making Order method their parent. You then add Country under Order method. Since there is no measure specified for Country, you specify the default measure so that data is returned for each country.
In crosstabs, Report Studio automatically sets the default measure when you insert a measure into the crosstab cells.
To specify the default measure for a crosstab, do the following:
Click any part of the crosstab, and
then click the select ancestor button 
in
the title bar of the Properties pane.
Click Crosstab.
Set the Default Measure property to the default measure.
To specify the default measure for a chart, drag the measure to the Default measure box in the chart.
