Above the objective lenses on the microscope, you will see a small black switch/button. You might need to zoom in to see greater detail. When you hover the cursor over it, the tooltip will read Snapshot.
Click this button to save the image that is in your microscope viewer. Enter a title and description and then click OK to save it. The image will be stored in two places: in the media player under Your Media and in the portfolio, which is accessible while you are working on the short answer or multiple choice assessment.
For more information on using the microscope, please view How do I use the microscope? (VIDEO).