Once you enter the preliminary information into TurboTax about the 1099-B, you would click the button that says I'll enter additional info on my own (as shown in the attached screenshot). This box is located in the Tell us about your xxxx 1099-B screen:
Login to TurboTax online
Click Take me to my return
In the search box (located in the upper right hand corner), type 1099-B
Click the Jump to 1099-B link that appears in the search results
This will take you to the beginning of the 1099-B interview. Continue with answering the questions until you reach the Tell us about your xxx 1099-B screen; click the I'll enter additional info on my own screen.
