To wrap up everything that helps enable automation you need to know about three more core functions within Home Assistant:
- zones
- areas
- scenes
You have one zone setup from the beginning which is your Home zone, you can add other zones and areas directly through the Configuration panel.
Configurations -> 
Zones
Entering or leaving a zone can be used to trigger automations in your home. To take full advantage of this you need a device tracker linked to your user – this will be covered in the next stride.
Configuration -> 
Areas
Areas can be setup to group entities into an area or most likely a room. That way you can affect entities in a particular area. Devices will need to be configured to know what area it exists within.
Configuration -> 
Scenes
Finally scenes can put a set of entities into a particular pre-configured state, such as having a night mode scene that turns all lights out and disables motion detection in the bedrooms.
Complete: Stride 2: Lights, Camera, …