It only works in 1280 x 1024 resolution. Use the provided ini file to auto arrange the windows.
You can alter the 2 chat windows to display whatever text you want. To access the chat window menu right click near the right edge of the black area. It may take you a few tries to find it. It may help you to increase the opacity of the window temporarily to see what you are doing.
Bard buffs appear between the rows of stats on the right side of the UI.
There is no custom pet window in this UI so that is up to the user to choose their own. Same goes for the spell book.