We moved to Quebec in August. I have not worked here yet, so only have T4's. Do we have to duplicate our T4's as releves or can we just enter them into the T4 section?

You only need to enter your T4s as T4 slips. If you don't have matching Relevé 1, you can just click the “Skip Relevé 1” button to bypass that page.

If you have TurboTax Live Assist & Review, here is how to talk to a Tax Expert: https://turbotax.community.intuit.ca/community/navigating-turbotax/help/i-m-using-turbotax-live-assist-review-how-do-i-talk-to-a-tax-expert/00/873764