Click Dimension Text on the Dimension toolbar.
If the Dimension toolbar is not displayed, click Dimension on the Main toolbar.
Select the driven dimension you want to override.
In the Dimension Text field on the Dimension Text ribbon, type the text that will override the dimension.
Press ENTER on the keyboard.
If you select a driving dimension instead of a driven dimension, SmartSketch prompts you either to select another dimension or to right-click and exit the command.