The earth wires are omitted for clarity and would need for being connected in any way switches and ceiling roses. The wires would even be coated from the protective outer sheath (cable). We’d choose to see the option to set a specific scene that has a long push, for example https://safeelectricalwiring24567.blogsumer.com/33965162/smart-power-points-and-switches-no-further-a-mystery