I go to Appearance, Menus where you can create a new menu (custom menu). The top of the page says Select a Menu or there is a link to Create New Menu.
I create one for Footer & one for Main or Top. Then on each one, you can add the pages (On the left side of the page where it shows a list of things you can check mark) and then click on Add to Menu. Don’t forget to Save Menu on the top right side.
Hope this helps.
