With reference to his reply to question 1559 on 23 June 2017, (a) how many permanent vacant posts are there currently in his department, (b) what is the (i) job title, (ii) salary level and (iii) short job description of each of the specified vacant posts and (c) by what date is it expected that the internal committee established by the Director-General to assess the critical nature of the vacancies will complete its assessment?