What is live chat pop out?
Pop-out chat does what it says on the tin: the window pops out from your website. With this option, a separate browser window opens whenever a visitor initiates a chat. The user needn't stay on your site to continue a pop-out chat session.
How do I force a pop up tab in Firefox?
Popup To Tab by em_te
Simply right-click on any tab and choose 'Move Popups Here'.