(1) How does his department intend to address the shortage of academic staff in the age group of 45 to 55 years, so as to replace the older, soon-to-be retiring cohort; (2) does his department have an existing guideline for the (a) appointment and (b) retention of academic staff beyond the existing retirement age at universities; if not, why not; if so, what are the relevant details; (3) does his department intend to introduce new guidelines in respect of the aforementioned matters; if so, what are the relevant details?