Filing

Yes, you can create both returns in one account, and regardless if you prepare them together or separately, both returns will be filed individually.

If your spouse has permanent residence status in Canada, they would likely just be a regular Canadian resident. However, if you are unsure of their residency status, you will need to contact the Canada Revenue Agency (CRA) and confirm it with them. 

If you are in Canada or the United States, you can call the CRA at 1-800-959-8281. If you are elsewhere, you can call 613-940-8495. This page has more ways to contact the CRA: Contact the Canada Revenue Agency