I want to create a sub menu, where the parent item is text only (not a link).

I've done so by making the parent item a text separator type menu item and making sub-menu items by selecting it as the parent for other menu items.

Now the URLs of the pages who are sub-menu items of that text separator are /parent-page/page.

How can I achieve my inital task but with the URLs of the sub-menu items just be root.com/page?