If you want to take a screen shot of something the patient shows during the video consultation, use the function available in the computer's operating system. If you are using Windows, you can press windows + shift + S and then select the area you want to take a picture of. For Mac, hold down Command + shift + 4 for the same function.
Click [here] to read more about how to take a screenshot in Windows, and [here] to read more about how to take a screenshot for Mac.