Where do I enter estimated Federal and State tax payments - my turbo tax screen does not have an "estimated tax payment" option under the "Other Tax" menu....

To enter, edit or delete estimated taxes paid (Federal, State, Local) - 

• Click on Federal Taxes (Personal using Home and Business)
• Click on Deductions and Credits
• Click on I'll choose what I work on (if shown)
• Scroll down to Estimates and Other Taxes Paid
• On Estimates, click on the start or update button

Or enter estimates paid in the Search box located in the upper right of the online program screen.  Click on Jump to estimates paid

Or click on Tax Tools on the left side of the screen.

• Click on Tools
• Click on Topic Search
• Type in estimated tax payments, click on GO

How do I  adjust tax estimates? my 2nd qtr shows 26000 and s/b 6500.

Estimated quarterly payments get entered under "Estimates and Other Taxes Paid".

To enter your payments in TurboTax Online please follow these steps:

1.  Click on Federal on the left side of your screen
2. Click on Deductions and Credits at the top of the screen
3. Click on I'll choose what I work on (if shown)
4. Scroll down to Estimates and Other Taxes Paid and click Show More
5. On Estimated Tax Payments, click on the revisit button
6. Make the correction for your 2nd quarter payment

@fpardoe