Proper officer designation under the Customs Act assigning officer ranks to exercise specified statutory customs functions. The Central Board assigns officer ranks as proper officers under section 2(34) of the Customs Act, 1962, mapping specified statutory powers and duties to Commissioners, Additional/Joint Commissioners, Deputy/Assistant Commissioners, DRI/CEI officers, Superintendents/Appraisers, Intelligence Officers, Inspectors and related senior directors, with section by section delegations and subsequent amendments set out in the notification; the instrument was later superseded by a later notification.