Cat II/III aproaches as flown on the Airbus FBW at I used to do them at both Sabena and now Air Lib:
-) First officer is Pilot Flying from top of descent till DH on RA.
-) F/O looks inside all the time.
-) Captain as well but as from DH + 200 starts looking outside.
-) then the call out 'minimums' is made by the plane.
-) Captain calls out 'go-around' and the F/O flies the go-around through the autopilot (i.e: clicks the toga button) or captain calls out 'landing' and takes over controls (i.e puts his hand on the throttle and closes them) to land the plane.