How can I correctly enter catch-up contributions to my 403(b) beyond the $19,000 limit for 2019 without Turbotax interpreting it as overpayment?

I double checked with my employer that I am eligible for up to $3,000 beyond the $19,000 limit for 2019. However TurboTax offers me no opportunity to enter this information or override it manually. Thanks for any help or insights.