How to I add my spouses kids as dependents if we are not married

I provided support for my girlfriend , our son and her two daughters for the whole year, how would i add the girls as dependents on that tax return if we are not married? my last year's tax return they were put as not related but there is no option like this on turbo tax. So i am confused as to how to add them as dependents.

posted

Sure there is ... Choose "another person" and then "other" in the drop down menu ... then you MUST continue thru that section and answer ALL the following screens.