I want to pay my nanny's portion of SS and Medicare Tax. How do I do this with Turbo Tax? I have completed Household Employee section but it only includes employer's tax

I completed the Nanny and Household Employee section and see it calculates the Employer portion of Social Security and Medicare Tax due.  However, I want to pay the Employee's share of the tax due as well (about 7.6%).  How do I do this?