1095-A does not cover full amount of premium paid, how to account for the rest?

I am self-employed with a HDHP purchased on a state health exchange.  Received 1095-A which shows how much the government paid each month.  However, that amount is less than the actual amount due, and I paid the difference out of pocket.  On TT 2022 desktop, the dialog in the Health Care Expenses section says DO NOT enter any premium amount if you received a 1095-A.  So my question is, if the 1095-A dialog only accounts for roughly 80% of the premiums, and I paid 20% out of pocket, where do I enter the 20% amount if not here?  Running the return both with and without the 20% value in the health care expense dialog did make a difference in the outcome.  Thanks.