Delete Layout and Edit Postions

Delete layout area

Click on the Delete icon besides layout area name as per shown in below image. The delete layout area panel will be displayed.

On click of the delete icon, a confirmation popup appears. Click on delete button to proceed further and the layout is deleted.

Edit position panel

Make use of up and down arrows (highlighted in blue) to shift the position of the layout area.
Later, click on the 'Save positions' button to save the changes.