Activate Office - Microsoft Support
To use Microsoft 365 on your new device, you can activate Microsoft 365 as a 1-month trial of Microsoft 365 Family. You can also buy Microsoft 365 or a non-subscription version of Office, …
Play music or other sounds automatically when a slide appears
You can tell PowerPoint to play music or other audio automatically when a certain slide appears during a slide show. There are different ways to play it automatically when you get to that slide in your presentation: To start the audio immediately when the slide appears during the presentation, use the options on the Playback tab. To start the ...
View previous versions of Office files - Microsoft Support
Microsoft 365 Office 2016 - 2021 macOS Web. Learn how Version History helps you see what changes have been made in a file, compare different versions, or restore the version you want: Open the file you want to view. Click the title of your file and select Version history.
Video: Insert equations - Microsoft Support
If you need to use an equation, add or write one in your Office app. Select Insert > Equation or press Alt + =. To use a built-in formula, select Design > Equation. To create your own, select Design > Equation > Ink Equation. Use your finger, stylus, or mouse to write your equation.