Giving a presentation using Powerpoint?

Make it interactive with these tips:

First, you have to be in Slide Show mode. Head to Slide Show at the top of your screen > From Beginning.

Once you’ve got your slides running, use the keyboard shortcut CTRL+P in order to access the pen.It’s going to just look like a small dot, but if you click and hold down with your mouse, you can draw on your slides.

You can use it to draw arrows on the fly, or circle important content to help make things clear to people. You can also draw pictures to help explain things (if that happens to be a skill of yours!)
To erase, just hit “E” and you’ll erase the last thing you’ve drawn.
To hide the pen, just hit CTRL+H.
For more tips like this: https://www.bettercloud.com/monitor/the-academy/how-to-doodle-on-your-powerpoint-presentation/