Go through thingiverse for free STL file download.
Search the file you are like and download it.
Select the model, and click 'Split'
Select the left or right nozzle for each individual module to print.
Select 'enable Oozeshield'
Slice the file and save the sliced file to TF card, and print the model.
You can not print with depublication or mirror mode with the dual model.