I do not see all of the options on my screen as what’s in the documentation to make my ‘BRANDS’ menu full width like the ‘SHOP’ menu. I’ve created an html block, see attached screenshot.
As soon as you add a menu item, save the menu to see Custom fields [for theme], they will contain the Drop-down “Design”, where you can choose “Full-width”
I found the debugging issue. The plugin conflict was with ‘Restrict User Access’. When I de-activated it, the ‘Custom fields [for theme]’ appeared and the menu appears correctly now.