(1) How many qualified and registered engineers are employed by each metropolitan municipality on a permanent basis; (2) what is the field of specialisation of each specified engineer in respect of civil engineering, electrical engineering and any other engineers employed; (3) (a) how many vacancies exist for qualified and registered engineers in each metropolitan municipality, (b) what is the job title of each vacancy and (c) since what date has each position been vacant; (4) whether there are any criteria determining the number of engineers in each field to be employed by each type of municipality; if not, why not; if so, (a) what are the relevant details and (b) where is this codified?