By default, when a sensor is embedded in a given device, it controls this device only. 

However, you can choose to select additional targets, so that the embedded sensor can for example control an entire room. To do so:

• Open the settings of the device with embedded sensor
• Select the "Sensor" menu, located on the right of the fading menu
• Scroll down to "Sensor targets" and tap on it.
• You can select one or more rooms that will react to the embedded sensor, alongside the device itself

The light with the embedded sensor has to be part of the targets at all times. For this reason, you cannot deselect it.

Note that every room may reply differently to a similar sensor "trigger" (e.g. when motion is detected, the front yard may turn on in warm white, while the entrance turns on in green). To configure this, select "Sensing configuration details" under the Sensor targets section. Then you can select each room and adjust its response to sensors.