componentclass for a subset of descriptions

Hi, I have an Object which has descriptions for: Route - name - text - track - locations I need to edit track and locations at the same time. That means I want to have a componentclass for those two fields. Usually this would be an extra object containing of those two. But I like to avoid to build an extra class just to be able to edit the fields separate. Is there a way to arrange the descriptions to accomplish that? I tried to build two subsets of the Route descriptions (name, text) and (route,track). But it isn't possible to add the one container to the other, or is it? thanks in advance, Norbert