" On the strength of the above order, we direct the re spondents inclusive of the Union Public Service Commission that all those candidates who have appeared for the Civil Services (Main) Examination, 1990, pursuant to our permis sion given in the order dated 7.12.90 and who have come out successfully in the said examination and thereby have quali fied themselves for the intervieW, that if those candidates completely and satisfactorily qualify themselves by getting through the written examinations as well as the interview shall be given proper allocation and appointment on the basis of their rank in the merit list, notwithstanding the restriction imposed by the second proviso and our present judgment upholding the validity of the said proviso since the respondents have not questioned and challenged the directions given by CAT, Principal Bench, Delhi in para graphs 5(ii), 6 and 7 of its judgment dated 20.8.1990.