Where od I enter unreimbursed business milaeage for business

[DoninGA]

Enter schedule c in the Search box located in the upper right of the program screen.  Click on Jump to schedule c or Go to Schedule C 

On the business listed that you have entered, click on Edit.

On the following screen, scroll down and click on Add expenses for this work

On the following screen scroll down and select Vehicle.  Scroll down and click on Continue

Follow the interview for entering a vehicle and claiming mileage