[Fizzlemizz]

Not "auto do" but couldn't you use:

Header:SetAttribute("sortMethod", "NAMELIST")

("NAMELIST" isn't mentioned on the wowProgramming page as a "sortMethod" option)

Sort YourNameList by group with spaces in the appropriate places.

Header:SetAttribute("nameList", YourNameList)

I haven't tried it (the spaces/blank names/"").

Just a thought.