Overpayment on Estimated Taxes 2021

Both my husband and I work freelance, and report estimated taxes for our income quarterly. My husband did some work for UCLA last year, and I didn't realize that they were taking taxes out.  So in the 3rd quarter of 2021, we overpayed on estimated taxes by approximately $500 (since I included the UCLA income in factoring in what we owed for estimated taxes, though taxes were already taken out of his paycheck - so we paid taxes on that income twice). We're filing with turbotax, and I entered the estimated taxes that we paid in 2021, but I don't see a place to input/reconcile the overpayment (as I'm hoping we'd get a credit for paying too much). I don't want to apply an overpayment to future taxes owed, I'd just like it added to our refund. I have done some searches, but can't seem to find an answer. Grateful for any advise and input - thanks in advance!