just category moderator
yup, implemented on a per-user basis (but not for groups yet)
Head over the Category ACP, find the category you want and click on "Options -> Access Control" and you should have an interface similar to this:
When should we expect this to be applied to groups?
Still could use assistance if anyone can offer. The new forums we are developing using nodebb is delayed until the next release, but if someone cant point me in the right direction I would highly appreciate it.