There isn't a specific automated way to create a PowerPoint stopwatch or countdown timer in PowerPoint, so it isn't straightforward. However, you can display a number on a PowerPoint slide and set ...

Learn how to make or create a Countdown Timer in PowerPoint. You can also use an Add-in. Displaying a countdown timer in your PPT can be helpful in many ways.

Setting a 10-Second Transition To set the PowerPoint slide timing to 10-second transition across all slides, select the Slide Show tab in the PowerPoint toolbar and click or tap Set up slide show.

Animate callouts on a PowerPoint slide to display optional information with just a quick click.