Q on Paying Multiple Quarters of Federal Estimated Payments (Calif Disaster Area Extension until Oct 16 2023)

Hello,

I need to make Estimated Quarterly payments for my Federal taxes for 2023, but since I live in California (which was mostly declared an affected disaster area this year), they have delayed our first three quarters due date until 10/16/23.

 

My question is -- when I go to the Federal Estimated Payment site, should I enter one payment for the sum of all the first three quarters, or three separate equal payments for them?   There does not appear to be a way to identify which quarter they are for, so it appears I'll need to go in a submit three separate times with today's date?

 

Thanks !