Where do I edit basic exemption?

I seem to have doubled the basic exemption/deduction. It should be 11,809 but I have 23,618. Picking up spouse or child. This return is the lower income and not claiming spouse or child.

Credits and deductions

In the return manager, select Deductions.

The select Deductions Summary.

Scroll down to Federal Non-Refundable Tax Credits. From there you will be able to see what totals to the 23,618. 

If you have carried forward your return, you can change selections in your profile under Getting Started to correct your situation for this year.