You can copy existing styles in a style sheet and then modify the new one to make it unique. This is a time-saving technique for setting up numerous styles in a style sheet.
Open the topic in the WYSIWYG Editor.
From the Format menu, select Styles. The Styles dialog opens.
If the Hide inherited styles check box is selected, remove the check mark to see all styles in the Styles list.
From Available in, select the style sheet name.
From Styles, select the style to copy. Even though you'll give the style a different name, it will retain all the formatting of the style you select here.
Note: You can only copy the default styles such as Normal, Heading 1, Heading 2, and so on, and not any custom styles.
Click New. The New Style dialog opens.
Enter the name of the new style (for example, "Caption") in the Name text box.
Type right over the text that is displayed.
The style name cannot include spaces.
Under Style type, select Paragraph or Character. Paragraph styles apply to entire paragraphs such as Normal, Heading 1, Heading 2, etc. Character styles apply to selected blocks of text such as Subscript, Plain Text, Code, etc.
If you select Paragraph, you need to set the style for the following paragraph. Under Style for following paragraph, select the style you want to apply from the drop-down list.
To further customize the new style, click Format and select the attributes you want to change.
When you finish customizing the style, click OK to return to the Style dialog.