self employed Individual 401K Roth Contributions

I'm self employed, over 65, and want to contribute to my ROTH 401K.  Let's assume I made 200K net.  TurboTax will only allow me to contribute $23K as an elective deferral and $7,500 as a Catch up.  There is no place to enter the employer contribution for a ROTH 401K (since I'm solo, I'm the employee and employer). That's a significant error since I'm allowed to contribute up to $76,500 in 2024 to a ROTH 401K.  How do I enter the additional employer contribution of $46,000?