This is a charting tool used to mark emphasis.
Click on the Arrow to activate it. (It is now dark grey.) Refer to the Figure below.
Click on the Arrow to select it, place the mouse cursor on the chart, click and drag to the location. (The small squares on the sides indicate that the Arrow has been selected.)
To move the object to another location, click, hold down and drag it to the new location.
To change the direction of the Arrow, click on tip square and drag it to the desired direction.
To lengthen or shorten the Arrow, click, on the tip, hold down, and drag it to the desired size.
To remove the Arrow, click on the object inside the squares and press Delete to remove it from the chart. Refer to the Figures below.