Is that the only estimated tax payment you had for 2018? That 4th quarter data field is on the same page with the other 3 quarters, if applicable.
I can tell you how to quickly get to the estimated tax section to enter the payments. You can enter the amount and the date the 4th quarter payment was made there.
I'm just curious if you had other payments why you are not seeing the 4th quarter field there. But maybe this is the only one you had.
