Deductions & credits

I have reviewed the instructions for New York, and I am assuming you are referring to the adjustment for the "Health Insurance and welfare benefit surcharge" as described below.

If so, you would make the adjustment in the state interview section.

You will see the following screen as you go through the state section:

Be sure to select Adjustments to federal income under the Changes to Federal Income.

You will be able to make your state-specific adjustment under the Wage and retirement adjustments section.