Multiple grids can be included in a report, where one or more of the grids is affected by changes to the dimensions in the user POV.
In Figure 5, Multiple Grids in One Report, the two grids look identical, but have different values for Measures and Year.
If you go back to the Report client and turn on the grid POV, you see that the members for Product, Market, and Scenario have been set for Grid 2. Thus, changing these dimensions in the Report Designer has no effect on Grid 2.
It is useful for the designer of the report to indicate the user of page dimensions in a text box or in row/column headers.