How do I remove a group?

I added a new group on my NC11 instance for testing, now I’d like to remove it and it doesn’t appear to be possible.
I’ve removed all users from it hoping it’d simply vanish but that hasn’t happened, and there’s no delete icon next to it!

In the left menu there is a list of all groups after that is a trashcan to delete that group


That was absolutely not there earlier, but logging out and back in it’s now appeared.

Thank you @Vincent_Stans!