Yes I can explain that. It’s like this. If you draw a picture on a piece of paper, think of that paper as it’s own 2-Dimensional universe. Now when you draw something on there with your 3-Dimensional pencil, that’s affecting the dimension below it. Although the 2nd-Dimension can’t interact with the Dimension below it, the 3rd Dimension can do so with the others below it. So when you think of higher dimensions, the interactions are the same for the respective dimensions below them, even if the origins are different.
Going back to the pencil and paper example, the pencil is the origin for the 2-Dimensional universe, but the pencil is not it’s own origin. It came from some factory or something made from materials dug out of the earth.