
This layout structure needs to be followed for each sheet that you refresh but can appear anywhere on the worksheet. In addition, you can also request a refresh on ranges of selected cells; in those cases, only the selected range needs to contain a valid layout of recognizable members.
The overall layout sections and terminology is as follows:

Page axis members are members that act as a specification (filter) for the whole report. An axis is a set of one or more dimensions that define the row axis or column axis in a report (see the red and blue boxes in the layout picture above). The data grid is where the amounts from the database appear.
Here is a sample report with the same highlighted borders to indicate all four sections. Notice that the three axes contain more than one dimension:
