If your mother is a Permanent Resident, and you are her dependent, then as far as I know you're exempt from the biometrics requirement for the PR application. You won't need to give biometrics for the visitor extension if you're legally in Canada. https://www.canada.ca/en/immigration-refugees-citizenship/services/application/application-forms-guides/guide-5525-basic-guide-sponsor-your-spouse-partner-child.html If you are applying as a member of the family class and are legally in Canada when you apply, you are currently exempt from giving biometrics. -- However, you will get a letter from IRCC and that will give you instructions. You will need to follow those instructions. If they tell you that you have to leave to give biometrics, you'll have to do that.