Security Monitor Pro shows thumbnail view that allows you to quickly see the camera status and previews.
To view thumbnails, you have to select camera layout which has camera count less than the total number of cameras present in the application. Also the thumbnail view is visible only upto three camera layout.
To change the layout, click on the 'Camera layout' icon from toolbar.
The thumbnail view is a smaller view of your camera along with the status icon indicating recording, monitoring or broadcasting actions. You can also adjust the size of the thumbnail view.