Just got a new stick-up cam; how to set up people-only?

I just paid for the yearly package, expecting to be able to change the settings to people-only so I don't get notifications so frequently. But the [online directions](https://support.ring.com/hc/en-us/articles/360032947972-Refining-Your-Alert-Notifications-with-People-Only-Mode) say I need to click Smart Settings. I'm working off my app, and I don't have this option. How may I get it, or is there an updated set of directions for implementing People Only detection?