Click on the Extension to activate it and place it on the chart. (It turns dark grey.)
To move the object to another location, click, hold down and drag it to the new location.
To change the Color of the Pitchfork rays, click on the Color number to display the drop-down menu at the end of the row.
Select and click on a color from the drop-down menu.
To remove the Pitchfork, click on the object inside the squares and press Delete to remove it from the chart. Refer to the Figures below.