Template overrides are a way of changing the way Joomla shows something without changing the basic or core Joomla system. A template override is a layout file that is placed in a special subfolder of the template. If found, it will replace the standard layout file for that template.This means that as Joomla is upgraded to new versions you will not have to repeat all the changes you made.

The control panel that administrators use to manage the content, appearance and functionality of the site. Access to the back end is typically restricted to higher level users, such as publishers, administrators, and super users.