Go to Appearance > Menus to create a menu, we name it One Page Menu.
Upfold Links and add links for scrolling menus of Home page, fill in #section ID in URL,(The Section ID here is the Section ID we set up earlier in Section Options from Appearance > Theme Options > Home Page > section X) then click Add to Menu.
A menu item is created successfully.
You can use this method to add menu items for every section.
You can also add links for other pages, for example , blog.
Finally, check the Home Page Sidebar Menu and click Save Menu to save the menu.