how do you add image to usergroup
 

How would I add an image to the user group so that instead iof it showing the text like say moderator so that instead it shows a certain image

Admin CP --> Usergroups --> Usergroup Manager --> (Select Group) Edit Usergroup --> User Title:

Of course you need to change the location and image name to your own.

Alternately create a rank with the desired image and assign it the group in question.