1. Printing from word processors, spreadsheets, etc.
Open a word processor and select Print.
Select Copies & Pages menu and select Layout.
Select the Two-Sided: menu and change it to Off
Save Current Settings as Preset by selecting Default Settings.
Type "Single-Sided Printing" and use the Preset for All printers.
2. Printing from Chrome.
Then, remember to 1) Select the printer you want 2)uncheck Two-sided printing under options.