In Settings, you can change the preferences of the App or the Accessories. Here is a quick tour:
General: This is where you set or change the Home Name, Icon and Location, set the energy costs and the Days Off Calendar for Eve Thermo:
Accessories: Here you will find all your Accessories and all relevant settings for them. It is also the place to add new accessories:
When you tap an Accessory, you will be able to Update the Firmware, remove the accessory or change some of its characteristics:
Guest Access: The App Eve does not allow to set guest access, you have to use the app Home from Apple.
Groups: Groups help Siri understand which accessories belong together. For example, a collection of lights can be grouped as Desk Lamps.