Alright, so you want to make your panels scroll right? Usually it's the message panel that everyone wants to make scroll, but all the panels have possibilities!! Where there's a will, there's a way!
Anyway, to make a panel scroll - you have the option of either 1) making the whole panel scroll, or 2) making the body scroll. An example of what I mean is: think about your messages panel, you can either have the whole thing scroll - and when you scroll the panel down, the header will go with it. Or, you can have your header stay put and just have your messages scroll (I hope this makes sense!! If not, just experiment).