If you are using TurboTax Online, you can search for "Investment Expenses" on the Tax Home page. Continue to the 2nd page to enter expenses that are not interest.

If you are using TurboTax Desktop in EasyStep mode, you can search for "Carrying charges" using the Find tool. 

If you are using TurboTax Desktop in Forms mode, you can search for " t1ws" by clicking on the Forms icon in the blue icon bar. Then you can enter your fees at the top of page 2, under “Line 22100 – Carrying charges, interest expenses, and other expenses”