CAP Academy has a video of this:
Create a new order as if you were scanning it, then click OK.
The Dental Manager screen appears.
Right click the case, then click Import Scans.
The Open Preparation Scan window pops up.
In the window title bar, it is tells you what scan it wants first; in this example it is asking for the Lower.
Navigate to where your scans are; in most 3Shape exported scans, each are in their own folders.
Go into the "Lower" folder
NOTE: It is not always the lower first. Look at the top of the window it tells you what its asking for
Double click the scan to open it.
The Open Preparation Scan window re-opens. The window title bar is now asking for the antagonist scan.
Go to the "Upper" folder, and double-click on the file name.
After bringing in the antagonist you are finished.