To add another page to an HTML form, with a template open in the designer, click Add New Page on the Designer tab. A new page is displayed. Once the new page is created, you can add form controls to the page.
You can navigate from one page to another by clicking on the page thumbnails in the Pages pane.
You can also reorder pages of a form. To reorder pages, click on a page's thumbnail and drag it to the correct position in the sequence.