How do I perform manual two-sided (duplex) printing from Windows?

From the software program's File menu, click Print, select the product, and click Properties or Preferences, then click the Finishing tab and check the Two-sided printing (Manual) checkbox. After the first side prints, remove the printed stack from the output bin and reload it face-down in the input tray in the same orientation, then press OK on the control panel to print the second side. (Pages 17-18)