Installing Plugin
Download the plugin from CodeCanyon and install as a
usual WordPress plugin. You can install the installable zip file
from Dashboard > Plugins > Add New or just place the
extracted plugin folder within wp-content/plugins/
Since it’s an addon for Cornerstone, you must have
Cornerstone installed on your site.
Cornerstone documentation can be found in the Themeco
Knowledge base: https://community.theme.co/kb/