Reference URL: https://support.office.com/en-us/article/share-your-screen-in-skype-for-business-2d436dc9-d092-4ef1-83f1-dd9f7a7cd3fc
Share your screen in Skype for Business
You can show your entire desktop or just a program to everyone in a Skype for Business meeting, call, or instant messaging (IM) conversation.
Note: In the video, the Present Desktop preview displays what you would see if you are using multiple monitors. If you use a single monitor, you will not see this preview.
Present your desktop or specific programs
Keep in mind that you need to be a presenter in a Skype for Business meeting to share your screen. If the option is grayed out, ask one of the presenters to give you presenter access.
Present Desktop when you need to switch between multiple programs, or work on files from different programs.
Present Programs when you need to present specific programs or files and don’t want people to see anything else on your computer.
Share your screen or program
Important: When sharing your desktop, everyone in the Skype meeting can see your programs, files, and notifications. If you have confidential information or files that you don’t want people to see, close them—or use Present Programs instead.
At the bottom of the conversation window, click the Present (monitor) button.
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Choose one of the following:
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To share the content on your desktop, click Present Desktop.
Important: When sharing your desktop, everyone in the meeting can see your programs, files, and notifications. If you have confidential information or files that you don’t want people to see, close them or use Present Programs instead.
To share one or more programs or files, click Present Programs, and then select the specific program or file.
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On the sharing toolbar, on top of the screen, use either of these options:
To share control of your desktop or program with the participants, click the Give Control button in the small toolbar at the top. Learn more in the Give Control section below.
Click the pin to hide the toolbar and have more space. To unhide the toolbar, move your mouse to the top of the screen. When the sharing toolbar appears, use any of the controls you need or click the pin again to keep the toolbar visible.
Note: While you are presenting, your Skype for Business status changes to Presenting ( ). This means that you won’t receive instant messages or calls. You can change this setting in the Status options window.
To have a meeting attendees to share their screen, give them presenter access and they will be able to use the controls. If they don't use Skype for Business, they can still use Skype Meetings App (Skype for Business Web App) to present.
Adjusting video
After giving control to another participant, you might want to adjust the video size. For information on how to adjust the size of the video presentation, see How to adjust video size on Skype group calls.
Stop sharing your screen
Click the Stop Sharing button when you are done sharing your screen.