Hello, i created in my project (see the picture below) menus folder with the menucontributor and i followed your instructions, only permission work but it didn't appear any button or link in the menu. So if I want to apply permission on a button or link that already exists, what's the best way to do this? E.g. I want to apply a permission on the "My account" button (see the picture below) you see in user menu (see your last answer), how can I apply a permission on it and hide for some users??? Is it possible to do or should i replace the entire header bar like the documentation says??