Handouts are documents you can print from within PowerPoint that include slide representations from your presentation. PowerPoint lets you include as many as 9 slides on each Handout page. Of course, with 9 slides on a page, your slides will look more like thumbnails. You can also choose to print just one slide on every handout page, so then your Handout pages will look like individual slides printed on a page.
Learn about the Handout Master view in PowerPoint 2019 for Windows.