When you join a call, whether it was already scheduled or you added a call later, the microphones and cameras will turn on so the people on the call can hear and see the people in the room. If you also want to share what you’re showing on the Surface Hub touchscreen, select Present Screen.
To stop sharing content with the people on the call without hanging up on them, select Stop Presenting. The call will continue, but the people on the call won’t be able to see what’s being shared on the Surface Hub touchscreen.
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