In PowerPoint, slides are sized for an onscreen slide show. They are displayed horizontally, with slide numbers starting from one, but there are features in PowerPoint that allow the user to change ...

To change your PowerPoint slideshow orientation, you must access the "Slide Size" feature under the "Design" tab. You can then adjust your PowerPoint slideshow from the horizontal landscape to ...

Though you can always choose a premade template, you may want to customize your PowerPoint slide backgrounds manually. You can add a custom background to one or more slides, and you'll also have the ...