Use this section to enter deductions that will be found on Schedule 1, such as an IRA or Health Savings Plan deduction.
Be sure to adjust any amounts generated by copying scenarios that were originally created from the tax return, as the same deductions may not occur every year. 
This is also the section where you can enter deductions for self-employed health insurance and contributions to SEP IRA/Solo 401ks (“Self Employed Plans”). If you have correctly entered the amount of self-employment income, the system will automatically calculate the deductible portion of the self-employment tax.