Sounds like an Area check the entity

[vapid flume]

yes, that´s it, but both 'groups' (livingroom and bedroom) are changed simultaneously, when I change one of them.

• I don´t want one of these groups at all and can´t delete it. ('delete' link is deactivated)
• How do I delete it, if the delete-link does not work? Must be in the configuration-files somewhere?