You can modify data issued from prepared datasets or datasets in preview in the Properties panel.
Annotation Representation Attributes Bookmark Representation Attributes Building Representation Attributes Group Representation Attributes Imagery/Map Representation Attributes Line Representation Attributes POI Representation Attributes Polygon Representation Attributes Simple Feature Representation Attributes Terrain Representation Attributes Tree Representation Attributes Urban Furniture Representation Attributes Viewshed Representation Attributes WMTS Representation Attributes