Option 1: Incorrect. The Application Import functionality is used to import actual data, not create dimensions. Option 2: Incorrect. Data load rules are used to import data, not create dimensions. Option 3: Correct. The Dimension Editor in the Performance Management Architect (PM interface is used to create and manage dimensions in Oracle Profitability and Cost Management Cloud Service. Option 4: Incorrect. The Calculation Manager in the Oracle Enterprise Performance Reporting Cloud Service (EPRCS) interface is used for creating and managing calculations, not dimensions.