The CRA requires that you wait until you get your Notice of Assessment before Refiling your tax return because they may catch the error in the review of your return.
Please see the link provided below for more information:
And to revise your income expenses, you will need to go to the "Income" tab then "Employment Expenses", whatever you have entered will be there to correct.
Footnote: We at TurboTax want to encourage you and your close family to take all necessary precautions to ensure your safety. Please review the articles provided below for more information during these difficult times:
