Retirement tax questions

Followup Q's:   So on your response to #1 above, you mention line 19 and 26.  Where are these line numbers?  What form I guess is the question.  When I click the FORMS button on TT it takes me to a "Schedule C Worksheet Cont'd" page that has no line numbers, but is the spot that $24K payment for my spouses elective 401(k) deferall is entered.

Regarding my original #3 question.  I assume I need to determine the amount I am allowed to contribute for myself and my W-2 spouse as the employer match or profit-share distribution to the same 401(k) plans.  Mine looks like it is calculated in TT (although I do not know where the amount is and where I am supposed to confirm I actually paid this to the 401k ).  I do not know where I calculate or enter the employer profit share contribution for my spouse.  Maybe it is in the same form as #1 above, just a second line declaring the employer match contribution under her employee contribution?  Would that be the correct place?

Sorry if this is convoluted and confusing.