To change your PowerPoint slideshow orientation from horizontal to portrait, you must access the "Slide Size" feature under the "Design" tab.

Powerpoint presentations are a great way to share information with a team, but making them is a skillset in its own right. We've got guides on general Powerpoint use, but if you're keen to just get ...

Whether you’re presenting a slideshow to your executives, clients, or peers, you want to convey your message clearly and successfully, and at the very least prove that you know how to use PowerPoint.

An Insert New Picture dialog box will open. Select the picture files you want for the photo slide show. In the Picture layout section, select Fit to slide on the context menu.