Choose View→Style group→Style.
On the Style dialog box, in the Style Types box, click the style type you want.
Click the New button to open a dialog box based upon the style type you clicked.
On the Name tab, in the Name box, type a name for the new style.
To base the style on an existing style, click a style from the list in the Based On box.
Click the other tabs on the dialog box and set the options you want to apply to the new style.