A family of Microsoft word processing software products for creating web, email, and print documents.
You can select a text range and then change the margins for the selection, using the Page Setup dialog box. Word will put the text range in a separate section.
First, select the text range. Then double-click the vertical ruler to display the Page Setup dialog box (or use the dialog launcher button in the Page Setup group on the Layout tab on the ribbon). Make the desired changes. Change "Apply to" so that it says "Selected text" and finally click OK. Word will add the required section breaks.
Alternatively, you can apply indentation to the relevant text paragraphs. The advantage is that you can do this without section breaks.