Underpayment Question - form seemed to change halfway through

I'm filing jointly for the first time and got to the Underpayment penalty section. I entered my and my spouse's Tax Liability, and just my Adjusted gross income because that page didn't mention my spouse (2023). What I can't tell is if I should be entering just my Annualized Gross Income or if it should be my spouses as well. And is there a way to tell if this will actually help my taxes and/or choose not to do the Annualized option after? There's not much information on this in TurboTax that I could find.