Redmine

Thanks a lot to developers! - Very useful plugin!
Our Organization has lot of users, and they are grouped..
So, on the one hand it is difficult to check-box every user in huge list of users, on another hand there is need to share with some particular entire groups...

Is it possible to share issue with Group? If yes - how can I do it?
If no - Can we expect? - Will any updates regarding Issue Sharing with entire Group be done in future?

Thanks...