TurboTax only lets you select one province per return. So if you need to do both an Ontario & a Quebec return, then you will need to do 2 separate TurboTax returns - one where you choose Ontario as your province, and then one where you choose Quebec. You will end up preparing your Federal return twice, but you only need to submit it once (with the Ontario return).
Please see this post from TurboTax Ginette on how to enter a Relevé 1 (RL-1) when you don’t live in Québec: https://turbotax.community.intuit.ca/community/importing-data/discussion/re-i-have-3-t4s-that-import...
