If you are using the TurboTax online edition, you cannot override the amount. All the information on the tax forms including Schedule 1 is being carried over from the step-by-step interview questions. If you want to edit the information on the forms, you have to revisit certain sections to change the data.
If you are using the TurboTax desktop version, you can go to the Forms mode, to your left, select Schedule 1, locate the lines, right-click and write over the number. To read more information, click here: Override
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