Where do I enter Specified private activity bond interest dividends reported in box 12 on form 1099-div. There is do box 12 in the TurboTax div program

On the screen where you enter the 1099-DIV in TurboTax, check the box that says "My form has info in more than just these boxes." It's just below box 1b. When that box is checked the screen will show all the boxes on the form, including box 12.