s 64 Delegation of functions of the Investigatory Powers Commissioner for Northern Ireland .
(1) Anything authorised or required by or under any enactment ...to be done by the Investigatory Powers Commissioner for Northern Ireland may be done by any member of the staff of that Commissioner who is authorised for the purpose (whether generally or specifically) by that Commissioner. (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .