Bs65 this is exactly what the website says as mentioned above....
Flight instructors who meet either of the following criteria may be issued work permits under the PGWPP. In order to be eligible, applicants must:
have completed a flight training course at a Canadian training centre and have obtained a Canadian commercial pilot’s licence; and
have obtained, or be in the process of obtaining, an instructor’s rating and have received an offer of employment as a flight instructor from a flight training centre.
Applicants providing either of the above documentsmay be issued a post-graduation work permit valid for three years if the flight-training course was at least two