There is a section for these items under Deductions and Credits.
For this item, it might be easier to follow the step by step since it looks like you might be using the desktop software:
- Click Federal Taxes
- Deductions and Credits
- You may have to click “Ill Choose what to work on” or "Show All" or "Check for More Credits" to get full list to appear
- Scroll down to Estimates and Other Taxes Paid
- Scroll down to Other Income Taxes and click start
- Scroll down to Other Income Taxes Paid in 2017
- Click Start next to Balance due on your 2016 state taxes paid in 2017
- Enter your tax payments
If you have trouble finding it let me know and I can update the answer with screenshots.
