A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
As is often the case, the producer of the video neglects to indicate on which edition of PowerPoint or on which platform release the video is based. Further, they don't bother to indicate whether the feature works the same in other versions... I'm not even sure they aren't blind to the fact that there are variants other than the one they are using or that there are differences that need to be taken into consideration. In many cases they're interested in little more than generating income.
This is the case with that video. The version being used is an unspecified release of PowerPoint for Windows. PowerPoint for Mac has not been provided with the same capability. It isn't available in the PowerPoint Online web app, either.