Hi there,
T4 slips are used to report all income you paid your employees over the previous calendar year to the Canada Revenue Agency (CRA).
If you'd like to adjust your T4s, you'll have to contact our support team using this link here. One of our payroll specialists will be happy to give you a hand with adjusting your T4s. Let me know if you have other questions by commenting below.
I'm here to help.