You can change the definition of the default
character and paragraph styles, as well as any new styles you create.
When you change the definition of a style, all of the text formatted
with that style changes to match the new style definition.
In the Character Styles panel or the Paragraph
Styles panel, do one of the following:
Select the style in the panel, and choose
Character Style Options from the Character Styles panel menu or
Paragraph Style Options from the Paragraph Styles panel menu.
Double-click the style name.
Note: Double-clicking
applies the style to any selected text or, if no text is selected, sets
the style for any new text you type. If you don’t want to apply
the style, hold down Shift+Ctrl (Windows) or Shift+Command (Mac OS)
when you double-click the style name.
On the left side of the dialog box, select a category
of formatting options and set the options you want. You can switch
to a different group of formatting options by selecting a different
category.
If you need more information about any of the formatting
options, search for the option name in Help.