Administering Planning Accessing More Administrative Tasks Administering Dimensions Customizing Calendars Renaming Time Periods Renaming Time Periods You can rename root-level, base time periods, and user-defined summary time periods. To rename time periods: Click the Navigator icon , and then under Create and Manage, click Dimensions. For Dimension, select Period. Select the time period you want to rename, and then click . Rename the time period, and then click Save.