Filing 1040x Amended Return. Which number fields to change "Can someone claim me as a dependent"?

.We want to file a 1040x form for an amended return. Simple return. Teen child with a part time job.  We mistakenly did not check the "Can someone else claim you as a dependent" when we filed the original.  What fields on the 1040X do we need to fill out - is it 24-30, or other?  I think the rest of the return was correct. Any guidance appreciated - thank you.

After you file

Why are you trying to do this by hand when the computer does it for you ?

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