Here is the solution for sort menu items in Umbraco and you can setup menu in Umbraco by this way by your requirement to customize the Umbraco theme.
It’s not easy to find a sorting order of Umbraco content page. please go over following steps to sort content pages in the order you wish them to be displayed on website’s header menu.
- Just right click on the content tree
- then select ‘sort’.
- you will get a list of all pages then you can sort it by drag and drop.
- click Save.