Tabbed secondary chat window?

[Torquil]

I think you have to pull the window over the tab to the left of your main window to merge it back. I know I did it while the servers were up.

I think you misunderstood. I don't want to return a pulled out chat log into the main chat log in the lower right. I want to take multiple pulled out chat logs and merge them into a new,second tabbed chat log in the lower right.