Single member LLC, trying to enter Solo 401-k contributions. My calculated max is $34k but I want to contribute 24k. Where do I enter the employee part /employer?

My 'retirement Deduction results' show
'Self-employed Individual 401(K)' as 18k and 401k matching contributions as $5k. Did I do this correctly or does the matching contributions refer to a different type of plan all together? Thank you!