Fusing is the final step that will combine the multiple scan families into a single mesh model.
6.1. Click the "Fuse" button along the top tool bar to enter Fuse mode.
6.2. Click the "Fuse" button again to finalize your model.
This step produces a new scan family (e.g., family "C" in the image below) containing the fused result as shown in the image below.
6.3. Click the "Back" button to exit Fuse mode.