How to set the PPT countdown to 15 minutes: First, we find ppt2019 on the computer and create a new blank presentation; then click on the animation option and find "Duration"; finally change the duration to 15 minutes.
First we find ppt2019 on the computer. If you don’t have this software, you can download one. After downloading, we start the next step
Next we create a new blank presentation, and then we start the next step
Next we click on the animation option, and after finding it we Start the next step
After we find the duration option, after finding it we start the next step
Finally we put Change the duration to 15 minutes to complete the 15-minute PPT countdown setting
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