This is useful if you uploaded a keynote speaker photo in portrait mode and you want to adjust it so that the head is nicely centered, for example, the Jane Goodall photo below:
Crop the Image
Click on the image, then click on the crop icon:
You will see the cropping menu:
The crop menu allows you to:
Zoom in/out (click and hold for fine grained control)
Scale to fit (return to the original image)
Confirm changes (or simply click out)
Click and drag the image to reposition it.
