imageCLASS MF242dw How to set 2-sided printing as default

[Ade2]

I have a ImageClass MF242dw copier/scanner/printer all in one.  I would like to set the default printing to   "2-Sided ON” and only use one-sided when I need it. 

Keeps returning to “Two-sided Off" and I have to keep resetting to  "Two-sided On

Can someone help me?  

Adrian

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