Login in to your schools system:
O-Key
C-Key
Gold Key
Aggie Access
Lion Key
In the O-Key Personal Profile page, click on Email Distribution Admin on the left side of the page.
On the next page, a list of the Email Distribution groups someone is a member of should appear.
Locate the Email Distribution group to be manipulated by using the drop-down arrow and click it.
Click the Continue button.
On the right of all members that you wish to remove, click the check box.
Click the Delete Selected button.