Background operation - if enabled, you can continue capturing photos and videos even while you are using other applications, or other screens in Voyager. When the main screen enters/exists background mode, a new video recording sequence is started, thus the specified video length is not preserved.
The other settings here mainly control the overlay of the Video/Retain/Photo buttons on top of other applications, allowing you to place them even at pixel-level resolution, so they don't get into the way of using your other in-car apps.
The Video/Photo buttons can be used the same way as the buttons from the main screen, and they also indicate the status of the video and photo operations. The Retain button works as the viewfinder on the main screen, allowing you to save away interesting road events.
A long-press on any of the buttons will take you back to the main screen, without affecting the video and photo operations.
Settings: Photo
Settings: Automatic mode