The most important option in this window is the Enabled checkbox; when a Camera Texture is enabled, it uses up rendering time, and might cause FPS slowdowns.
Position and Rotation set the position and rotation of the Camera Texture's camera, primarily used to create security cameras.
In the example image, the MapCamera is shown, which is an internal Camera Texture that generates a map of the simulator environment.
To use the Map Camera in your own buildings, first enable the map using the Map command in the script, and then use the "MapCamera" texture on an object such as a wall.