How to print the front and back of an A4 paper in word and fold it horizontally?

1. First, select the page layout in the document, and then click the next page in the separator.

2. Next, continue to find page settings in the page layout options, and click the small arrow icon below the page settings.

3. After clicking, you will enter the page setup interface, find the page number range in the margins, and select the book fold in multiple pages.

4. Then switch to the paper interface, select A4 in the paper size, and click OK.