If you are using our TurboTax Online please go to the T3 - Trust Income and Designations and enter your non-business foreign income in box 25 as box 24 is for business and 25 is non-business.
You will need to upgrade your TurboTax Download to our TurboTax Home & Business version to be able to enter Foreign non-business income.
Once in the Forms you can search for T3 and enter box 25 as seen in the image below.
Thank you for choosing TurboTax.