The 1041 module of TurboTax Business will populate Line 11, Code A from entries in the Trustee fees and Professional, accounting, and tax prep fees sections in Step-by-Step Mode.
The module will populate Line 11, Code B from entries in the Taxes and Other deductions sections in Step-by-Step Mode (and also investment interest expense).
You can add a miscellaneous statement for Line 11, Code B in Forms Mode.