You can create a graphic from scratch by applying appearance attributes to an object, or you can base a graphic style off of other graphic styles. You can also duplicate existing graphic styles.
Create a graphic style
Create a new graphic style based on two or more existing graphic styles
Ctrl‑click
(Windows) or Command‑click (Mac OS) to select all the graphic
styles you want to merge, and then choose Merge Graphic Styles from
the panel menu.
The new graphic style contains all the attributes of the selected graphic styles and is added to the end of the list of graphic styles in the panel.
Duplicate a graphic style