D3M makes it easy for you to duplicate a single icon, here's how to do it:
Right-click on the device you want to copy
Click on Duplicate in the context menu
Click & drag to move the new item to the desired location

D3M makes it easy for you to duplicate a single icon, here's how to do it:
Right-click on the device you want to copy
Click on Duplicate in the context menu
Click & drag to move the new item to the desired location