Step iii. The structural picker — cover layout (Plate / Full-bleed), then three rows of page layouts organised by photo count (1 / 2 / 3+). The cook has to make the call before the book renders: this is the hand of the boutique route, not a template the system picks. Copy lead: 'Layout. The shape of the book.' Selected thumb carries the ochre hairline ring. Available again later from Settings if the cook changes their mind in Preview.