Group rooms into "areas"/"zones"/"events"
To be able to change temperatures settings to predefined levels in several rooms simultaneously depending on time of the day or an event e.g. an event could be "going to bed earlier" -> increase temp in bathroom and sleeping room while turning off heating in living room and kitchen. An area could be "home office" and would allow to turn temp in home office room and kitchen to desired temp with just one button.
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