To meet the business requirements of UC, the administrator should add a custom Material dimension to the Forecast Fact and Forecast Set objects. This will allow UC to group and filter the forecast data by the material attribute of the products. The administrator should also clone and use the standard DPE definitions to populate the new custom metrics for the Material dimension. The standard DPE definitions are templates that can be used to aggregate data from various sources, such as sales agreements, orders, opportunities, and custom objects. By cloning and using the standard DPE definitions, the administrator can save time and effort in creating the formulas and filters for the new custom metrics. The administrator does not need to configure a custom Forecast Context or create new DPE definitions from scratch, as these options are more complex and require more customization. References: Create Holistic Forecasts with Advanced Account Forecasting, Set Up Dimensions and Period Groups, Streamline Forecast Calculations with Data Processing Engine Definitions