Tap the pause button 
from the right menu to pause and resume 3D scanning and the automatic triggering of cameras.
When you pause the NavVis VLX, the PAUSED label in the top bar blinks until the user resumes the scan. Also, a Paused notification appears on some of the screens for a few seconds.
In pause mode, no images are taken (auto-triggering is disabled) and no points are added to the Point cloud. Pause mode is useful in the following scenarios:
People are coming into view of the device (they should not appear in the point cloud or in panorama images).
The device is being used in an area where the user does not want to capture panorama images or a point cloud but still wants to continue capturing in the same Dataset.
You are hot swapping batteries.
Note: In pause mode, only the 3D scan process is paused. Localization is always running. To avoid impairing the quality of the recorded map, do not move faster or less carefully than normal.
When you pause the NavVis VLX you can set it on the ground like this:
FAQ
How do I pause the 3D scanning process on the NavVis VLX?
Tap the pause button from the right menu to pause and resume 3D scanning and the automatic triggering of cameras.
What happens when I pause the NavVis VLX?
When you pause the NavVis VLX, the PAUSED label in the top bar blinks, and a Paused notification appears on some screens for a few seconds. No images are taken, and no points are added to the Point cloud.
In what scenarios is it useful to pause the scanning?
Pause mode is useful when people come into view of the device, when you want to avoid capturing images in a specific area, or when you are hot swapping batteries.
Does localization continue to run while the scan is paused?
Yes, localization is always running even when the 3D scan process is paused.
Can I move the device quickly while in pause mode?
No, to avoid impairing the quality of the recorded map, do not move faster or less carefully than normal while in pause mode.