HipChat accounts are specific to the group that they're a member of. In order to invite a user into your group, you will need to send them an invite specifically (adding users can be accomplished at https://hipchat.com/admin/users). You can also let users sign up via a special URL that can be found at https://hipchat.com/admin. Users will need to use a separate email for each account they want to connect to HipChat with.
...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
We're bringing product updates and pro tips on teamwork to ten cities around the world.Save your spot