To answer your question, enable "Advanced" view in ADUC.
The easiest (and correct) way to give a person management capabilities of a DL would be to assign that person as a manager on the "Managed By" tab. Then the user can modify the group using Outlook.
PSC
Governments and corporations need people like you and me. We are samurai. The keyboard cowboys. And all those other people out there who have no idea what's going on are the cattle. Mooo! --Mr. The Plague, from the movie "Hackers