[Question] How to set the icon for a targets which displays next to the target in Xcode

Hey! I was trying this for a few hours last night and couldn't get it working -- assuming I have a valid Icon.icns -- is there a way I could set that icon for the target to display next to the target in Xcode?

I'm working on an Xcodeproj which has a ton of targets and this would feel really nice for my dev team when working if I can get it working.