This guide works with all versions of PowerPoint. Some of the tools may be in different locations depending on which version of PowerPoint you have. But generally your customizing tools will be located in the Ribbon area at the top of the slide or in the upper right hand corner. Most of these instructions will also apply to Google Slides and Apple Keynote.
PowerPoint is a registered trademark of Microsoft Corporation. Google Slides and Apple Keynote are trademarks of Google and Apple respectively.