Generally once students arrive in Canada, they of course would go to study at their post-secondary education institution, or in some cases secondary schools, for the sake of discussion for PSE. I know many of those post-secondary institutions have supports, given the high percentages of international students on their campuses.
Generally with respect to your question, I think it's quite limited in terms of any additional supports that IRCC provides to international students per se, although the institutions that they go to or that they study at are part of a list of designated learning institutions, so in that respect, the federal government does have oversight over where the students study.
Lastly, based on the nature of the program, part of the initial screens of perspective students would also be their ability to sustain themselves while they're in Canada studying.