When you are viewing a group item, you should see the section “Direct Group Members”.
The semantic model is about defining groups in a hierarchy that are tagged with certain labels (for example a location tag). At the bottom of the hierarchy you have items that are members of those groups.
When you are on the page “Model” you can start creating your model and the membership will be defined without you having to specify much
But can i use the equipment as a switch to controll the light in den overview pages? Like an normal switch. And drill deeper if is nessary to controll each lightbulb.
No I don’t think this is possible at the moment. The idea of a group equipment is more forseen to have different kinds of points attached to (switches but also sensors). What you’d like to do is possible in a sitemap but I don’t think it’s possible in the new UI