When you create dimensions using AMPOWERDIM family of commands, you can select a dimension text template from the Predefined Text drop-down list, on the Power Dimensioning Ribbon Contextual Tab.
If you create a dimension with a dimension text format that you want to reuse across other dimensions and drawings, you can add that dimension to the list of dimension text templates. If required, you can delete an existing dimension text template, by right-clicking it and selecting the delete option.