Anyone has any idea how to edit already created roles? http://puu.sh/lHepu/dba2ff225c.png

it only gives me the option to change the description, can't even change the icon of the role

also it's pretty terrible already that you can't actually test the roles you make to see if they work because it seems not being able to edit their propertiesis a thing

anyone has any idea how to change the icon or edit custom roles properties?