You can create or edit a style, and then save the changed version to the style library. If the style has the same name as a style that exists in the style library, it replaces the library version.
Access to a style library may be controlled by the CAD administrator. It is usually a good practice for the CAD administrator to maintain a master copy of a style library and copy it if modifications are needed. Using this practice, you can always retrieve the default styles from the master library.
Create or open a document with the styles you want to copy to the style library.
On the ribbon, click Manage tab Styles and Standards panel
Save.
In the dialog box, all styles in the document are listed. Click column headers to sort contents.
Click OK to save styles marked Yes, or Cancel to close the dialog box without saving styles.