In the Wages box on screen 10, where you enter the box 1 wages you can click on the box in the right of the input box to make multiple entries (in a multi-state return) and enter each state's wages assigning them to their respective states in the State column and then an entry for the non-taxed states that you designate US.  The total should equal your box 1 wages and you'll have the correct total for the home state.