If the person gets self-employed commissions, then he or she has to mention it under T4A slip in box number 020. and if the amount of commission earned has been entered under this box then there is no need to enter it again under the self-employment profile.
For more information about reporting self-employment income please visit the link below: -
Guidelines for Reporting Self-Employment Income (TurboTax)
To get more information about self-employed commissions please follow the link below: -
Self-employed commissions (Canada Revenue Agency)
Thank you for choosing turbotax.