The overview page is the starting point for your site. Here you will get an overview of the current state in the system.
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The maintenance status of you installation, as well as the emergency status is shown, with a shortcut to explore more details if you have any faults.
You also get a quick overview of your energy usage, in addition to some general information about the site.
You can also add light control scenes to the overview for quick access if you like. This can be set from the Light Control page by enabling Show in overview for the scenes you want to show.