To create an ellipse
main topic
    
example     see also 

1    In the Graph Annotation Tools toolbar, click .

2    Place the crosshairs over the point on the open graph where you would like to place the ellipse.

3    Click and drag the crosshairs in any direction to size and shape the ellipse and release the mouse.

Tip

To create a circle, press and hold [Shift] after step 2.