How do I deduct for margin interest?

Margin Interest is deductible as Investment Interest Expense.

To input your Investment Interest Expense in TurboTax Premier/Deluxe:

1. Click the Federal Taxes tab
2. Click Deductions & Credits
3. Scroll down to the Retirement and Investments section
4. Click the blue Show More in this section
5. Click Start (or Revisit) next to Investment Interest Expense

Please see attachment for reference.

I follow your instruction to input my margin interest, but i did not get the form 4952 which report my margin interest in in my  tax package. I need to discuss  with your tax experts to solve this problem.  how i access your tax expert ? please email  me