You can add sections of empty or clear space between paragraphs of text with the Insert bar.

Place your mouse cursor between two text paragraphs, and a + icon will appear between them.   Hovering over the button will show multiple items that can be inserted into the space between the text blocks.  Choose "INSERT SPACER", and an area of "empty" space will be added.  The space is shown with a green highlight and the word 'SPACER' when you mouse over it in the editor, so that you can see its size.  The green highlight and label aren't shown when you mouse away from the area, and aren't shown at all in the story preview or when the story is published.

When hovering over the space in the editor, you are also provided options for increasing or decreasing the size of the spacer and to delete it.