Fire starters, hold mains and mark items sold out on every device at once. Set up menus, modifiers and courses once.
Set up your menu once, with courses, modifiers and allergens, and use it everywhere. During service, fire starters while holding mains until the table is ready. When the kitchen runs out of something, mark it sold out on one device and it disappears from every handheld, counter and customer QR order at the same time, so nobody sells a dish you cannot make.
