Link to Bookmark

Hi all, are there any way to insert many objects to a bookmark? I know that it is possible from bookmark editor widget with multi selection but... for ex, If I need to add to a bookmark many objects of a complex assembly would be useful select multiple objects from tree structure. Is it possible?

More over, why using powerby connector (V5 or SW), during save I can organize the object in to a bookmark instead using 3dexp catia there is not the same function?