You can re-order the pages on your website, and create sub-pages. 

Step 1

Go to the Pages tab.

Step 2

Drag pages up or down to change the order.

Step 3

Drag pages to the right to create sub-pages, and left to undo this.

If you have a lot of pages and would like some extra help, check out the following article: How do I re-order pages in a sub-menu?