Section 5(3)(e) in Allotment of Government Residences (General Pool in Delhi) Rules, 1963
(e)The inter se seniority of applicants in the rank of Secretary and Additional Secretary to the Government of India shall be determined as per the civil list published for each service on the basis of their date of joining the Government of India at Delhi subject to the condition that no junior batch applicant of the same service or no junior applicant of the same batch and of same service shall get priority over his senior batch applicant or senior applicant in the same batch: