Hi. Sounds like you are looking at how to enter or change information related to the repayment of your first-time home buyer credit, which shows up on form 5405 and flows to the 1040 Schedule 4.
These instructions should help you.
https://ttlc.intuit.com/questions/1901522-how-do-i-add-or-remove-form-5405-for-the-first-time-homebu...
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