Once you downloaded the component you can install it.
Installation
CalendARI uses standard Joomla! installation procedure. The tutorial on how to install Joomla! extensions can be found here.
Upgrade
Upgrade process doesn't require to uninstall previous version of the extension. Just install new version of the component over installed one through standard Joomla! installation page and the installer does all necessary changes.
Note: We recommend to create a backup of Joomla! database prior upgrade the extension to have ability to restore data if an error occurs. The backup can be created with help of AkeebaBackup extension.
Uninstall
The extension uses standard Joomla! uninstall routine. The tutorial on how to uninstall Joomla! extensions is here.