I would assume Adult, because the principal will be adult. Don't trust me on this though, this is just my thinking. I'd call IRCC and check just to be sure. I'm sure this would be an easy one for them to answer.
All in one envelope, try to separate application packages with clip or whatever you think works. Send to Adult.
It will be processed as a family package. Did the same for our family, though used the regular mailing address instead of courier, as was by Canada Post.
All in one envelope, try to separate application packages with clip or whatever you think works. Send to Adult.
It will be processed as a family package. Did the same for our family, though used the regular mailing address instead of courier, as was by Canada Post.