There is such an option - on the front panel press copy and a screen will come up with the copy options. While trying to set up double sided printing you probably set the default for copying to 2:2. You can change this as follows: click copy on the front panel. Next click the two-sided button and change this to single sided to single sided. You can make this the default by then clicking on Settings, press the down arrow three times and then "Set as Default".