How to minimize loadup sub-category in IP Content by default

[Gauravk]

I am using IP Content extensively, and one out of many uses is for car classifieds for 20 car brands. As our classifieds is gaining traction, it's time to add the sub category for car models inside each of the 20 car brands. I like the small triangle on left to toggle sub categories, but wondering if there is a way to technically make it appear in minimize format by default and user can expand whatever category they want to dig-in  in below two places:

1. On the right category nav
2. While adding new content