Google Assistant, enabling Smart Lock with On Body Detection & Trusted Places

Hi, sorry but if I’m understanding correctly, are you suggesting I have Google set to not run in the background? I did make sure the Google app is set to not be optimizing battery usage and can run in the background. After setting a screen lock (pin, pattern, etc.) I’m hoping to allow Google to wake up my watch with "Hey Google, or “Okay Google.” Then I’m trying to find the Google SmartLock settings within the password setting so my device can remain unlocked at certain locations or while connected to certain Bluetooth devices, ect.