Install the Ultimate Live Chat plugin either via the WordPress.org plugin directory, or by uploading the file to your server.
After activating the Ultimate Live Chat plugin, then you should supply it with your hosted mode API Key by going Appearance -> Widgets from within your WordPress admin. You can find your hosted mode API key by visiting https://www.ultimatelivechat.com/my-account.html.
That's it. You're ready to go!
Requires: 3.0 or higher Compatible up to: 3.5.2 Last Updated: 2013-3-21 Downloads: 7,085