A Mac running OS X v10.14 or later with Office on Mac installed.
Word on Mac version 15.18 or later.
Copy and paste the manifest-word-styleguard.xml file to the following folder (see full path below).
To navigate to this folder: From the FINDER, click on GO and hold down the OPTION key. This will reveal your LIBRARY. Click on LIBRARY:
• Once in the Library folder...
• Open Containers
• Open com.microsoft.word
• Open Data
• Open Documents
• Open "wef" (if the wef folder is not in the Documents folder, create it).
• Place the manifest-word-styleguard.xml file in the wef folder.
For Microsoft Word: /Users/<username>/Library/Containers/com.microsoft.Word/Data/Documents/wef
Open Word, and then open a document. Restart Word if it's already running.
In Word, choose Insert > Add-ins > My Add-ins (drop-down caret), and then choose the StyleGuard add-in. Be sure to click on the drop-down caret "⋁" and not just on the words "My Add-ins."