Once the built-in styles are visible, you can format your document and use the Update to match selection command to update the appropriate style.
- Apply the current built-in style to text.
- Reformat the text using Format commands to achieve the desired appearance.
- Select the formatted.Be sure to include the paragraph mark.
- In the Styles and Formatting task pane, click the drop-down arrow for the built-in style you are redefining.
- Choose Update to Match Selection.