Group Users (i.e create teams / departments)

This is a fairly basic and obvious feature that is missing, especially if you are in a medium to large company, there should be a way to group users into teams or departments. Not having this is especially frustrating when assigning followers to tasks as you must individually add people which is slow when you have many users. There is currently an option to add ‘everyone’ but that does not always apply.

Just to expand on this request as its becoming more and more of a requirement for me.
When you have lots of users, its a real pain to individually add them to a task or comment, to create pre-defined user groups e.g. ‘management’ or ‘technical department’ would really help

Seems very simple to implement, yet is not as straight forward as it seems.