About Dimensions and Members
Dimensions are data categories used to organize business data for retrieval and preservation of values.
Dimensions usually contain hierarchies of related members grouped within them. For example, a Year dimension often includes members for each time period, such as quarters and months.
You can select members for the grid from the Member Selection dialog box available from the data source ribbon, from the POV toolbar, or by entering the member name using free-form mode.
Dimension and Member Naming Limitation
Selecting Members from the Member Selector
Selecting Members from the POV Toolbar