Is there a way to have a link or image on my webpage to open HelpOut Tab panel on click?
You may apply "lhn_open_panel" CSS class to any element on your web page to instruct it to open HelpOut Tab panel on click like so:
<a href="#" class="lhn_open_panel">Help</a>
There are a variety of other ways to customize the HelpOut Tab:
http://help.livehelpnow.net/article/1/2205/installation-as-a-tab-slideout