When you apply for outland, you will send your application to a central area which is the Case Processing Center in Mississauga. You dont apply directly to CEM ( canadian embassy manila) or other visa offices. After they approve you as sponsor, CIC will choose what Visa Office will process your application further. CiC wil choose VO according to the applicant's country of birth or residency. If you spouse is Filipino living in the Philippines OR Filipino but working abroad, then CIC will send it to CEM. The current trend is they send it according to the applicants birth country.