Adding Dome Siren to Ring

Trying to add a Neo Z-Wave compatible siren as per. instructions here - [https://support.ring.com/hc/en-us/articles/360021290892-Setting-Up-Your-Dome-Siren-in-Your-Ring-App](https://support.ring.com/hc/en-us/articles/360021290892-Setting-Up-Your-Dome-Siren-in-Your-Ring-App) It mentions adding the Dome Siren in the Security Device -\> Siren section. I do not have this option in my menu. I have 'Works With Ring' and all other options for security devices. Any help would be appreciated.