Integrating Zotero into MS Word or Libre Writer

The ultimate function of a reference manager is to add citations to your papers.   The most straightforward way to do this is by integrating Zotero with your preferred writing editor.  If you are prompted to do so during installation, then accept the integration request.  If not prompted, open  Zotero and navigate to Tools -> Add-ons.  You will see something similar to Fig 1.