Firstly, you will need you RRSP contribution slip, which should be handed out by the end of March, to those that have contributed to RRSP. Once you have that slip then you enter it in on TurboTax under "RRSP" Profile.
Review link to guide you through:
How do I enter RRSP contributions in TurboTax?
https://turbotax.community.intuit.ca/replies/2648068
