Child with DIV and unearned IRA income

Where in TT deluxe can I find the place where a parent's income is added (or changed)?

My son had DIV income and an RMD from a ben. IRA, and I added in his mom's (custodial parent) income during the process.

But now, I need to change her income amount, and I cannot find the place in TT where I can do that.

Can anyone help?

Th