On the Tools tab Material and Appearance panel Appearance . The Appearance Browser displays.
In the Appearance Browser, in the toolbar at the base of the dialog box, click . A new appearance is added to the Document Appearances section, and becomes the current appearance for the edit.
Specify a name for the new appearance.
Modify the appearance parameters.
Close the Appearance Editor.
Appearance Editor
In the toolbar at the base of dialog box, click and then click Create New Appearance.