I have a problem with a group (or a helper, I don’t really know what to call it)
I created a new entry with helpers of type Group => Switch group.
I added all my light switches, and I created the group: All the lights.
Except that I cannot list (with auto-entities for example) the list of lights in this group.
it created for me an entity linked to another entity. But how do I list this connection in my template?
A list of the entity IDs of all the entities in a Group helper (and legacy groups) is held in the attribute entity_id. This can be used in Auto-Entities card using template in the filter section: