Once Behave Pro has been installed, a "Behave Pro HipChat" page will appear under the "Add-ons" tab.
An installation token is required to allow Behave Pro to communicate with HipChat, copy your Installation token from this page.
Click the Connect HipChat button and sign into HipChat, you will then be redirected to the Install Integration dialog. Select which room to install Behave Pro into.
Paste the Installation token "JIRA token" field and press save. Behave Pro should now successfully be authorised to communicate with HipChat.