You can follow the below step to change it:

1. In the upper-right corner of your screen, select Find.
2. In the Find window, type Income Exempt Under the Indian Act.
3. Select Income Exempt Under the Indian Act from the list, and select Go.
4. Enter 0 for Net self-employment income not included in box 88 of your T4 slip(s) (excluding losses) value.

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