1. Open URL http://xxxxxx01/SelfService/default.aspx
2. Click on "Groups I manage"
3. URL for this: http://prtprdars01/SelfService/CustomCommands.aspx?TaskId=ManagedResources&TargetClass=user&DN=CN%3dname+surname%2cOU%3dStandard%2cOU%3dWlg%2cOU%3dUsers%2cOU%3dProd%2cDC%3dstats%2cDC%3dgovt%2cDC%3dnz
4. Embedded in the URL change the "name+surname" to any other user.
5. The other user (even do he does not have access to manage the groups) is able to edit/ammend and save changes.