You can export a chart to a file of a specified format. You can then subsequently open and edit the file in a separate application (e.g., a graphics package).
To export a chart, right-click in the chart, and select Export… from the context menu.
You will be prompted for the graphics format. The following choices are available:
•Windows Bitmap (BMP)
•Enhanced Windows Metafile (EMF)
•JPEG Image (JPEG)
•Portable Network Graphics (PNG)
•Graphics Interchange Format (GIF)