Can I enter actual fuel and food expenses for travel related to a charity? I don't want mileage. TT Deluxe won't allow me to enter any travel expenses without mileage.

I would like to enter actual fuel and food expenses for travel related to a charity. But under charitable contributions, it always asks for and reverts to mileage. I am not claiming mileage but Turbo Tax Deluxe won't allow me to enter any travel expenses without mileage and when I enter it, it always assigns a mileage deduction. I know I can't claim both actual expenses and mileage, the IRS allows one or the other, but TT does not allow me to enter actual travel expenses.