There are no normal or irregular procedures associated with it. There are no buttons to press. It is just flight control info they put in the FCOM to make it even bigger and thicker than it already is.
We have no control over it and cannot turn it off. It is not something I need to know about.
Sharklets are a promise Airbus has not been able to keep. The design is patented by a small company closely associated with Boeing (but not Boeing itself). Airbus is not willing to pay patent royalties.