Quick How To:
Install plugin (enable it)
Install component (you dont have to link a menu item to the component)
Go to the component and now enter in the URL. This doesn't work by putting the full URL. for me, i have a HOME , CATEGORIES, etc pages
So instead of putting the URL in the component i used:
and now whatever meta tag that you put in will show up, go refresh your website page and check the source and see your meta tag showing up.
for the programmer, i suggest adding a quick "how to" in the forum, because i went to check hoping there was one to help me figure that out but there was none.
Thanks for the plugin though works good when its set up correct.