To Place a Center Mark
in a Circle or Arc Using the Place Center Mark Tool
Select the
Place Center Mark
tool.
In the tool settings window enter desired center size and choose
other settings.
Select the circle or arc, or its center.
Enter a data point to accept the center mark.
Left: Placing
a Center Mark / Right: Dynamically adjusting the extension line (Association
set to Off). (Negative value for center mark, shows extension lines).