To Configure Leaders for Balloons (AutoCAD Mechanical Toolset)

At the Command prompt, enter AMOPTIONS.
In the Options dialog box, click the AM:Standards tab.
In the Standard Elements list, double-click Balloon. The BOM Settings dialog box appears.
In the Default style section, click . The Balloon Settings dialog box appears.
In the Arrowhead list, select the arrowhead.
In the Color list, select the color.
Note: To acquire the arrowhead shape and leader color from master settings, select the list item marked “By NameOfCurrentDraftingStandard".
Click OK until all dialog boxes close.