To Add a User-Defined Column to a Hole Chart (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 Hole Chart. The Hole Chart Settings dialog box appears.
Click . The Hole Chart Columns dialog box appears.
Scroll to the bottom of the list of hole chart columns.
In the last row, in the column named Column, enter a name for the new hole chart column.
In the list of Hole Chart columns, enter information for the Caption, Width, Formula, Caption alignment, Data alignment, Data type, precision, and Wrap text.
Click OK until all dialog boxes close.