How to access rogue ap detection in Nebula for NWA130BE AP

Hi I have setup two Zyxel NWA130BE wireless access points at our site using Nebula, I can manage the access points via Nebula and they are working. How can I access the Rogue AP detection feature through Nebula for these AP's and see if there are any rogue access points broadcasting at our site, perhaps setup alerts when new ones appear. I have tried searching on google, and on this site but cannot find the section.

Thanks Graham