Adding a new page
Go to Pages > Page setting > Click Add a new page > set your page name and click Add
To rearrange pages, move your cursor to the back of the page title then your cursor will change to the arrows, drag and drop the page up or down to rearrange.
To change a page to a subpage, drag and drop the page to the right, or drag and drop to the left to set as the main page.
On the page that you are editing. There will be no options for Delete, Hide from Navigation (internal page).
Apart from those, all options are available.