want changes to submenu applied to all submenus

In the upcoming version the updated "Customize menu" will be released. I've prepared the video to show updated menu customizing process:



As you see, now you can customize submenus by any level in one place. So if you have 100 menus you don't need to open any menu and customize the sub-menus.

I have to make some tests and the new version will be published.