When you make the negative entry at Less common income, type "Non-taxable compensation under IRC section 104(A)(2)" for description. That is what TurboTax will show on line 8 of Schedule 1.
Line 8 will show:
Nonemployee compensation from 1099-NEC $XX,XXX
Non-taxable compensation under IRC section 104(A)(2) -$XX.XXX
