You can use both the Home app and the Nest app to control the Nest x Yale Lock.
Lock or Unlock
- Open the Google Home app
.
- Tap Favorites
or Devices
..
- To lock or unlock your device, tap the device tile.
.
or Devices 
..The app will show whether the lock is currently locked or unlocked. To see details like the lock's name, location, and when it was last locked, tap on the lock 
Auto-lock and One Touch locking features can be found in the Device options below.
Device options
To change settings on your lock with the Google Home app:
- Open the Google Home app
.
- Tap Favorites
or Devices
.
- Tap the device tile to select your device.
- To access the lock’s details, tap Settings
.
.
or Devices 
.You can change your device’s name, assign it to a different room, and control the following settings.
Lock tone volume
To change the lock’s tone volume, select the volume setting you prefer: low, high, or off.
Auto-Lock timer
By default, the Nest × Yale Lock will not automatically lock itself, but you can enable automatic locking. You can choose how long your lock should wait before automatically locking. Tap your choice of timer under “Auto-Lock timer.”
One Touch Locking
One Touch Locking lets you lock the door from the outside with just one touch. If this option is enabled, you can lock by touching the lock keypad instead of entering a passcode.