When you work with multipage documents, you can change the order of pages quickly by using the command "Page Sorter View." (Under View > Page Sorter View).
To change the position of a page, select it (the page will be highlighted), click and drag to the desired position. During this action a vertical bar  [ I-beam ] appears indicating the new point where you can replace the page.  

Tip provided by Silvio Gomes, CorelDRAW Master, Artist and Graphic Designer.