Assignment of Dimensions to Applications 
You assign dimensions to applications to make the data from those dimensions available in your application. Each application must have at least one dimension of the required types: Account (A), Category (C), Entity (E), and Time (T).
Note
Use caution when adding dimensions from an application that already contains data. Assign dimensions only to new applications that do not contain data. If you do add a dimension to an application with data, the system finds the first base member alphabetically, and loads it into the fact tables, therefore writing all of the data from the application to that member.
Prerequisites
You have added the dimension to the dimension library.
Activities
To assign a dimension to an application, you modify the application as follows:
Highlight the application and select Modify Application.
Choose one or more shared dimensions and, using the arrow keys, move the dimensions from the Shared Dimensions column to the Application Dimensions column.
Select Modify Application again.