How to add the dots infront subforums?

I can tell you for certainty that this is not a plugin or hook, this is a modification to the theme within IPS. I don't currently have a test environment for IPS, so I can't tell you exactly the location of the template you need to edit, but if you find the right one it's as simple as adding the font-awesome icon code before the subforums name to get the results you wish.