you can manually set this setting directly on the lock touchscreen. If you have the manual, it shows all the settings you can manage. Here is the manual if needed.
which version of his app. He created a newer, simplified version last fall but it has some bugs.
You can also look into using the lock device handler provided by ST - Z-wave Lock. They also provide a very simple Lock app called Smart Locks in the Classic app and Smart Lock Guest Access in the STSC app.
https://support.smartthings.com/hc/en-us/articles/200958090-Smart-Lock-Guest-Access
You can also check out @RBoy Lock Manager…