Instructions for using the Group Chat Extension
The Group Chat extension lets you display any web-based group chat within your hangouts. This is useful if you want your Hangouts on Air viewers to chat with you while they are watching the live broadcast. The extension displays the web-based group chat via a iframe so all you need for the extension to work is the URL to your chat box.
That's all there is to it. You should see your chat displayed within the hangout.
You can embed the same chat box in your website/blog where you embed your live broadcast video.
If the others within the hangout want to participate in the chat, they can access the app by clicking on the Apps tab on the bottom left corner and selecting Hangouts Group Chat. They'll need to follow step 3 and 4 above before they can view the chat.
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