Centralisation of search cases: normally allocate searches to central charges, with exceptions for workload or low investigation potential. Instruction directs that search cases be centralised in central charges as a norm, but permits the Director General (Inv.) or Chief Commissioner (Central) to withhold centralisation due to heavy workload or low investigation potential; where no central charge exists, cases must be centralised in other charges after consultation with the Chief Commissioner(s) having jurisdiction over the group's core cases.