Staff rule 4.7(a) and (b) has a limited and express area of application as established in staff rule 4.7(c) and that, per a contrario, a person who is the father, mother, son, daughter, brother or sister of a staff member and who applied to a post, was considered and was selected through a competitive selection process as being the best candidate, can be assigned to any post, including in the same department/unit which is not superior or subordinate in the line of authority to the staff member to whom s/he is related. Staff rule 4.7(c), by establishing that the posts which are superior or...