Looking for some help w/ social group icons

[Subsim]

As in changing them. We never used Social Groups much, but lately we have found a use for them. Question, how do you edit the ? icon with a custom image? We tried Edit Group but there is no "Edit Icon" link or anything like it. Where should this be?

In Social Group Options we have Enable Social Group Image Icons set to Yes. What is likely causing this problem, thanks.