
Note: We're starting with the title page created in this article: Creating a Title Page in Writer from Document Properties
First the title should be styled as a title, to do this:
Click the Style drop-down and select More...

In the Styles and Formatting dialog, click the drop-down at the bottom and select “Hierarchical”

In the Styles and Formatting dialog, under Heading double-click Title

Without closing the Styles and Formatting dialog, select the subtitle, author and date in the document
In the Styles and Formatting dialog double-click Subtitle

Our document should now look like this:

To close the Styles and Formatting dialog, click the close button at the top-right corner of the dialog.