Please help me : so difficult to put some in CSS Profile

As a international student’ parent, I by myself, do the css profile.

As you know, U.S. tax return is diferrent from my’s, So make me confuse.

  1. in Parent Non-U.S. Tax Return

a. Wages, salaries, commissions, and tips is the sum of mother’s income and father’s? right?
b. I just put numeric, “All taxes, mandatory withholdings, and set-asides paid or withheld. Include income taxes, state taxes, local taxes, levies, and mandatory retirement payments”
“Itemize the sources and amounts for the taxes and withholdings amount entered above” is coming out.
What is “Itemize the sources and amounts for the taxes and withholdings amount entered above” and is that numeric?

Hi there! I’m also an international student, so maybe some information I have can help!
a. Yes! It’s the sum of both parents’ annual income.
b. I have no idea what itemize means either. Where are you from? If we’re from the same country and use the same tax return, maybe we can help each other out!