Yes we can use a slide in PowerPoint as OpenPose editor. The benefit is not only that we don't need to go online or install an extension, but that PowerPoint doesn't restrict any proportion composition. So, with help of PowerPoint it is for us possible to
generate skeleton with non-standard proportion like in gorilla, chimpanzee, or orangutan;
copy particular limbs to make monster with 4 arms, or 2 heads;
or even remove a limb to draw a mermaid for instance.
Furthermore, we can insert hand keynotes and/or face keynotes, and even edit it. Those are basically just colorful circles, lines, or shapes which can be drawn and modified easily in PowerPoint.
We can also add depthmap of hand poses to our skeleton. We will also find out that lineart of hand poses might be a cleverer alternative to draw nice hands. Finally we will see that lineart can be used to inpaint bad hands, and modify an image or composition to create something new.
You will find deeper discussion about the issues above, of course the PowerPoint file in