Sage 300

Is there a way that we can enter amounts and have them go directly to the new T4 boxes (57-60) that are required? We had someone start Payroll partway through the calendar year, and up to July, they just did one lump some history entry.

Since the T4A forms come from Payroll, has anyone figured out how to get the Vendor's business number in Box 13 of the form, since there is no place to add it in Payroll.

The taxable income is showing up incorrectly on the W2. How can I correct this?