++++ 1 Officials - Promotion - Minimum period in grade - Calculation - Starting point - Establishment - Member of the temporary staff appointed an official - Immaterial (Staff Regulations, Art. 45(1)) 2 Officials - Promotion - Assurances - Disregard of the provisions of the Staff Regulations - Legitimate expectations - None (Staff Regulations, Art. 45(1)) 3 Officials - Equality of treatment - Limits - Advantage unlawfully granted