1. What is the registration process to upgrade if you have been registered as PrTechni for over 11yrs and also registered as a candidate technologist?2. ECSA requires two registered professionals as referees, is it acceptable to have one registered referee in your engineering field (Civil)and the other referee on different engineering field(e.g. electrical)?3. How is ECSA resolving issues of getting signatures from previous supervisors? Is that still through affidavit or is there any alternative methodi?