Retirement tax questions

Hi, 

I went through all the steps of the Maryland return, but did not come across this page listed below. How to get to it and enter the capital gains amount form us gov obligations?  Is this under income or deduction? Thank you!

 

"Next, when walking through the preparation of your Maryland return, you will come to the screen Capital Gains from U.S. Government obligations are Tax Free. Here you will enter the amount...."