What is UE4's equivalent of an empty group?

I want to parent things in the scene hierarchy, having to add things to the component part of a blueprint is not a good workflow. what if you want to move something around? you would have to open up two blueprints, and drag the component between the two. Is there now way of parenting things in the scene hierarchy? Do I have to put all my level geo into a blueprint? maybe I’m thinking about things in the wrong way.