With regard to the recruitment of 22 graduate interns in line with the Presidential Youth Employment Programme in the 2021-22 financial year with the aim of alleviating unemployment amongst young graduates and providing opportunities to gain work experience, what (a) are the details of how the graduates were recruited, (b) is the duration of the internship, (c) is the total cost of the programme to the Office of the Presidency and (d) support is given to the graduates when they exit the programme?