I'm finding that if I continue as if I had a 1099-b, and select typing it myself, I eventually get to the screen that offers a dropdown of "sales sections," one of which is "short-term did not receive 1099-b form," and another is "long-term did not receive 1099-b form." I'm no expert, but it looks like this is the right path to follow. I agree it is obtuse because there's language before this point that implies you have one.
