If I may, on that particular point, the reason we're not doing it by embassies is that many of the parents' and grandparents' applications are processed entirely in Canada and never go to one of our missions overseas. Therefore, if you have an applicant from a given country, the application may be processed entirely in an office in Mississauga and never go to the mission abroad.
On May 10th, 2016. See this statement in context.