Sort 25-raid by group?

[Fierynarya]

Is there any way to sort the players of a 25 man raid into the groups they
are actually in? Sorry for being a blockhead, I am sure somewhere, sometime I did read something about it - but if there ever was a threat, it is sure doing
a nice job at hideing itself from me ^^

If anyone knows the answer and has the time, thanks for enlightening me :-)