With the release of the LiveHelp Server 3.5 for WordPress the footer live chat button is a simple option to deploy, now is not required a third-party plugin.
Please follow the next steps:
1. Go to the Wordpress Dashboard section Manage Domains and click over the button Configure Widget.
2. Set the tracking widget like always but now change the footer position to right, left or center.
3. Save the changes and reload your main page.