Partial Section 179 This Year - Where is the Current Year Expense Entered?

I have a $900 computer. I want to take a $500 Partial Section 179 deduction this year and amortize the rest. I select "No" to the annual election, and later "I'll take a partial section 179 deduction this year"  with the amount to deduct = $500. On the next screen it shows "Your estimated expense for this asset is $520" (where $500 is the section 179 deduction and $20 is current year deprecation).

 

However, it doesn't seem that Turbotax is deducting the $500 anywhere? Do I need to enter it myself somewhere?

 

p.s. My income from the business this year is $0. Maybe the section 179 is not allowed in this case?
If so, is there some other way to make a partial deduction this year and the rest in coming year(s)?