I'm not entirely sure I understand the goal, but I'll give it a shot... if you go to Outline View, you can click inside the desired heading 1 and click the Collapse button. Then click on the heading 1 (which will select all the paragraphs including headings that are childed below it), and use the Move up or Move down buttons to relocate the paragraphs.

I'm not sure if that is what you're after or not.