Self employed

I work for an international organization and we pay estimate taxes. We then fill Schedule SE to calculate the Self-Employed tax, reduce it by 50% and then enter that number on Form 1040 Page 1 where it asks for "Adjustments to income from Schedule 1, line 26" . Turbo Tax is not showing me how to open that tax form and enter the numbers as they were done last year (by a CPA). This basically reduces the taxable income.