Go to "Reports" and "All Reports" on the left menu. Then click on "Draft" and press the icon with the three dots (···) and select "Edit" on the report you want to edit.
To add the element, click "Add Element".
Click "Spacing" to add the element.
You can change the spacing size by hovering over the element and clicking "Options".
Choose the space's size. There are three choices: small, medium, and large. Then click "Save."