Step 1: Select the check box on the left hand of the page for the steps you would like to duplicate 

Step 2: Click on the duplicate icon at the top of the page, this will duplicate all the selected step’s moving them to the bottom of the page

Step 3: To reorder the position of the steps select the reorder icon at the top of the page

Step 4: Arrows will appear on the left-hand side. Click on the arrow to drag and reposition the steps