Create rules that are made of triggers and actions. A prominent example would be something like "Mute phone at work".

Here's a list of supported triggers and actions:

Supported triggers:
* Location
* Day/Time
* Charging state
* Battery level
* USB connection to computer established
* Your current speed
* Background noise (only until Android 7)
* Wifi connection
* Other applications running
* Airplane mode
* Roaming status
* NFC tags
* Bluetooth connection
* Headset connected
* Phone call running

Supported actions:
* Change wifi state
* Change bluetooth state
* Toggle USB tethering
* Toggle wifi tethering
* Toggle automatic screen rotation
* Make an HTTP request
* Change ringtone/sound setting
* Start another application
* Wait (in between other actions)
* Wakeup device's screen
* Toggle airplane mode
* Toggle mobile data connection
* Speak text
* Open music player
* Change screen brightness
* Send text message