How do I correct quarterly entries on form 2210 for income tax paid during each quarter?

[ChristieB]

In the search bar in the upper right-hand corner, type estimated tax, and then click on the Jump To link to go directly to this section. Then, click start or update next to the type of estimated tax payments that you made in 2018. 

If these were Federal estimated tax payments, on the next screen click Yes that you did make estimated tax payments, and then you will be brought to the screen that lists the 4 quarterly entries that you can update.