How do I add two chat boxes on the same page + and another issue

I wish to add two parallel chat boxes on the same page with two separate topics, how can I make sure that both are unique chat boxes and are not the same? I tried putting in two but if I enter something in the first chat box then it comes in the second one as well. I want to have two independent chat boxes.

Secondly, when I log in via Facebook or Twitter into my Chat box, I reach the top of the message list, i.e. I see the oldest message and not the latest - it does not scroll down automatically. How do I resolve these two issues?

Here's where I am trying it out :