How to add a line item on Schedule A in TurboTax for reporting session gambling losses?

I AM NOT reporting W2G wins in TurboTax, as I am reporting my gambling wins/losses using the Session Method as indicated in Revenue Procedure 2015-X. I am using the "Other Miscellaneous Income" section in TurboTax to report my Session wins. But I can't figure out how to enter my session losses on Schedule A in TurboTax without entering W2Gs. Again, I am intentionally not entering W2Gs due to the Session Method of reporting gambling activity. I am also only deducting losses up to the amount of wins. I just need to know how to enter the session losses on Schedule A in TurboTax.