When you set your Ring device to Away, Guard will automatically be set to Away mode also

I was reading the following support article. "When you set your Ring device to Away, Guard will automatically be set to Away mode also"I tested this on my phone and my wife's phone at the same time to observe if this actually occurs in real time and it does not. Is there a trick to this? Do we need to have a subscription to Alexa Guard or Ring Protect? https://support.ring.com/hc/en-us/articles/360028205592-Using-Alexa-Guard-with-Alarm-to-Detect-Broken-Glass-Smoke-and-Carbon-MonoxideAny assistance is appreciated. Thank you