→Installing an Extension
* Then open OpenOffice Writer or Calc. On the top menu, click Tools->Extension Manager...
[[Image:install_extension02.png|border|none|thumb|200px|caption Installing an Extension]]
Since extension can do different things, you should read how to use the extension before. Some extension might only appear and work on context menu. So if you cannot file the extension feature, check the extension's read-me file or manual.