Any suggestions to solve this problem?
You can't remove users from a group through the client if that's what you're looking for. However, you can remove users from the web at https://www.hipchat.com/admin/users if you're admin of the group.
The button Remove People you see from the client is for Room owners to remove users from private rooms only.
...have mention name FirstnameLastname. Fe.: @MaartenCautreels This certainly helps to know who is being mentioned in a conversation. Imagine your colleague sends the following message...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs
We're bringing product updates and pro tips on teamwork to ten cities around the world.Save your spot