Tell the editor why they can't edit Far Lanes
If you're below the required editor level to edit Far Lanes, then the Far Lanes interface is visible to you when editing Lane Guidance, but it's dimmed out - and there's no explanation why. For example, in Australia, Far Lanes requires Level 4 or higher - but nowhere in the Waze Map Editor does it mention this. For the user editing, the Far Lanes interface just appears greyed out for them for no apparent reason.
All that needs to be added is some kind of message that says "You need to be a higher level to edit Far Lanes" whenever the Far Lanes interface appears - perhaps just above where the Far Lanes configuration shows.