You need only configure the settings for your mode of participation, i.e. extreme, intrepid or moderate. These settings will automatically be applied to the upcoming challenge. You’ll always be able to reconfigure them for each challenge.
In extreme mode, the set temperature on your thermostats will go down more than in moderate mode, but you’ll have the chance to earn more rewards. You can choose to preheat certain rooms for greater comfort.
The recovery phase occurs between 10 a.m. and 11 a.m. for a morning challenge and 9 p.m. and 10 p.m. for an evening challenge. You have nothing to configure for this phase. As for your hot water heater and your electric car charging station, you can simply choose whether or not to include them in the challenge.
You have until midnight the day before a challenge to configure your settings. Any changes made after midnight will only apply to subsequent challenges.