To get the plus to appear, on a PC, I can click the box before entering anything and the + appears. Since nothing happens to get to the Description on the Mac, try entering your wash sale details in Part II, instead.
Be sure to not enter a value in the box before getting to the description, if possible. I understand the system may have put a 0 there because of the amount less than $0.50 automatically. It is preferable to not use overrides unless necessary.
Keep in mind, it is acceptable to leave the wash sale field blank for de minimis values less than $1 since there is not a significant tax effect.
@j_r
