Thread: Display specific sub-category on home page

Display specific sub-category on home page

I haven't been able to locate anything similar in the forums, but what I would like to do is on the home page rather than list all the ad categories, I want to just list one of the sub categories and all of its sub sub categories underneath it.

I already believe it has to do with modifying line 29 or 32 of the index.php I'm just looking for a nudge in the right direction. I plan on listing the categories in a widget but want to focus just on one specific sub-level.