> Please login to your Joomla admin dashboard
> Please go to the Global Configuration from the left side menu
> Please go to the Site tab from the top side of the page
> Please go to theMetadata Settings > Content Rights setting from the bottom of the page
> Please enter the metatag
e.g.
<meta name="rights" content="©2005-2011 Your company, Inc. All rights reserved" />
> Please click on the Save button to save the settings