To Find the Properties of a Tool Used by a Main Task

In the Customize dialog on the Tools tab, expand the Main Tasks tab.
Expand the User Tasks section and expand the open DGN library.
Select the Main task that uses the tool whose properties you want to find.
Right-click the tool and select Navigate to Tool from the pop-up menu.
The tool is selected in the left pane and its properties appear at the bottom of the dialog.