How do I allocate federal adjustments to income of $300 based on NYC part year residency?

[mosselveen]

There is a form where I am asked to allocate the federal adjustments to income of $300 "based on the time I spent as a resident of NYC or Yonkers". I was a resident of NYC for 1 month. How do I write this down, and what am I expected to enter in the description?

[ErnieS0]

It depends on what the $300 adjustment is from. If this is the $300 federal cash charitable deduction enter the amount you contributed while living in New York City. Then enter the charity and amount.

Same with any other adjustment. Enter the part of the $300 related to NYC.