Use the Add Warehouse Domain Member or Add Target Domain Member button to display the Add Warehouse Domain Member/Add Target Member dialog.
The Add Warehouse Domain Member/Add Target Domain Member dialog enables you to add a Domain member. For example, you might want to create a salary category called 'Range 5' so that you can map a range of values in the Source Instance to 'Range 5'.
If this button is grayed out, then the selected Domain is non-extensible. For more information, see "About Working With Domains and Domain Mappings" in the Oracle Business Intelligence Applications Configuration Guide.