Private Restricted Collections & Items

I saw this issue posted a year or so ago but I wanted to ask again to see if anything has changed with the recent updates. We want to use Omeka not only for a digital archvie and exhibit software, but also for storing institutional documents. The problem is, we need to be able to keep certain collections private to only certain departments and/or people. Is this possible or is there an easy work around? Thank you!

I think the closest thing would be to keep those documents private, and give the admin role to people who should be able to see them.