The 3D scan merging function allows you to combine multiple scanned and cropped 3D scans and save them as one new 3D scan.
For example, you can combine a room and its furniture to simulate a new house, or combine consecutive 3D scans to create a huge 3D scan.

In the library screen, press the multiple selection button in the upper right corner to enter the multiple selection mode.

Select the 3D scans you want to composite.
You can select as many scans as you want.

After making your selections, click on the Compose button to proceed to the Object Composition screen.
The 3D scan you have just selected will be displayed.

Now you have two overlapping 3D scans.
To select the 3D scan you want to operate, first press the upper right button.
The names of the 3D scans you can select will then be displayed.

Tap the name of the 3D scan you want to operate, and the display in the upper right corner will change to allow you to operate the selected 3D scan.
A box will be displayed around the selected 3D scan.

Swipe the reposition bar to change the position of the 3D scan.
Tap the arrow next to the bar to fine tune it.

Swipe the rotation bar on the right to rotate the 3D scan.

As with viewing a 3D scan, you can change the viewpoint, zoom in and out, reset the camera, and change the viewing mode.

When you are satisfied with the placement, click the Save button in the upper right corner.

After entering a name and saving a new one, the placed scans will be merged into one and a new 3D scan will be generated.

Composited 3D scans can also be viewed, further edited, combined, and shared in the same way as those created by shooting.
It’s a handy feature to have, so be sure to experiment with it!