It might as well be mentioned that it's not possible to do in the UI, which is why it's a log parser. You can (sortof) parse your own damage in the UI, but it doesn't work very well and parsing your group individually is plain impossible.
As ACT is a log parser/3rd party program, it cannot exist in your UI natively. The best it can do is make use of the
web browser window or put a window on top of EQ2 in windowed mode.