You are able to easily arrange different sections in your XML document in the Grid mode by using drag and drop actions.
You can do the following with drag and drop:
These operations are available for both single and multiple selections. To deselect one of the selected fragments, use Ctrl Single-Click (Command Single-Click on OS X).
While dragging, the editor paints guide-lines showing the locations where you can drop the nodes. You can also drag nodes outside the Grid editor and text from other applications into the Grid. For more information, see Copy and Paste in the Grid Editor.