When you receive a T4A slip with an amount in Box 48, CRA requires you to report this as "Self-Employed" income on the T2125 - Statement of Business Activities.
What you will need to do after entering the T4A slip is go to the Self-Employment or Business Summary and choose to EDIT that T2125 Form that the Box 48 amount has transferred to. Here you can use your own name and address in the business information section, as well enter any expenses you may have to use to offset this business income.
Please see this link from TurboTax: Why is TurboTax telling me I’m self-employed?
