LibreOffice uses page styles to specify the layout of a page, including the page orientation, background, margins, headers, footers, and text columns. To change the layout of an individual page in a document, you must create and apply a custom page style to the page.
Click the Page Styles icon.
In the list of page styles, right-click an item, and then choose New.
On the Organiser tab, type a name in the Name box.
Do one of the following:
To apply the custom page style to a single page, select the default page style that is used in your document in the Next Style box.
To apply the custom page style to more than one page, select its name in the Next Style box. To stop using the style, insert a manual page break and assign it a different page style.
Use the tabs in the dialogue box to set the layout options for the page style, and then click OK.
Click in the page to which you want to apply the page style.
Choose, and then click the icon.
Double-click a name in the list.
Click in the document where you want a new page to start.
Select Page break.
In thebox, select the page style that you want to apply to the page that follows the manual break.