For example, the startup platform has been opened, as shown below.

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2

Then click Call, as shown below.

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three

At this point, you can turn on the camera, as shown below.

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four

To save the picture, press shift+cmmand+3, as shown below.

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five

Or click on the photo, as shown below.

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six

Then you can also turn on the camera and click the red button.

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