1. The Commission hereby authorises the Chairman of the Agriculture Group to fix and alter for and on behalf of the Commission:
(a) in the oils and fats sector:
- the levies provided for in Articles 13, 14, 15 and 18 of Council Regulation No 136/661 EEC(2) of 22 September 1966 on the establishment of a common organisation of the market in oils and fats and in Articles 3, 4 and 5 of Council Regulation No 162/66/EEC(3) of 27 October 1966 on trade in oils and fats between the Community and Greece;
- the subsidies for oil seeds provided for in Article 27 of Regulation No 136/66/EEC;
- the refund on exports to third countries provided for in Article 28 of Regulation No 136/66/EEC;
(b) in the cereals sector:
- the levies and premiums provided for in Articles 13, 14 and 15 of Council Regulation No 120/67/EEC(4) of 13 June 1967 on the common organisation of the market in cereals;
- the refunds on exports to third countries including the corrective amounts provided for in Article 16 of Regulation No 120/67/EEC;
(c) in the rice sector:
- the levies and premiums provided for in Articles 11, 12 and 13 of Council Regulation No 359/67/EEC(5) of 25 July 1967 on the common organisation of the market in rice;
- the refunds on exports to third countries including the corrective amounts provided for in Article 17 of Regulation No 359/67/EEC.
2. The authority referred to in paragraph 1 shall be exercised in the event of the Chairman of the Agriculture Group being unable to do so:
(a) by the Vice-Chairman or one of the members of that group, or if they are unable to do so,
(b) by one of the other members of the Commission, or if they are unable to do so,
(c) by the Director-General, the Deputy Director- General or the Director of Directorate B of the Directorate-General for Agriculture.