After applying a paragraph style to text, you can easily update the formatting in the style.
Apply a paragraph style to text in the Properties panel.
Make formatting changes to the same text in the Properties panel.
Click the Redefine Style icon, which appears to the right of the style name in the styles menu, to update the formatting of the saved style to match the selected text. Any text with the style applied will update.
You can also edit a paragraph style in the Paragraph Styles panel.
Choose Manage Styles from the styles menu in the Properties panel to open the Paragraph Styles panel (Type > Paragraph Styles).
In the Paragraph Styles panel, either right-click (Windows) or Control-click (macOS) the style name in the panel and choose Edit [style name] or simply double-click the style name.
When you change the definition of a style, all of the text in the document that is formatted with that style changes to match the new style definition.
Change the text formatting for the style in the dialog box and click OK.