Deleting geometries

There may be a delete button next to each geometry in the hierarchical list. This button is available depending on the properties of each object. Objects that serve as a reference for other cloned objects cannot be deleted. Also, objects that have subordinate objects cannot be deleted.
The geometries deleted from the list will no longer be rendered in the viewport but the material associated with these geometries will not be deleted.

* Try the black "X" button from the hierarchical list to delete geometries