Canon VK-64 Administrator's Manual page 172

Arranging and Saving Layouts
The Viewing Area with a Small Grid could look like this:
The Viewing Area with a Medium Grid could look like this:
Note
172
Although you can add more, the number of Video Windows you
can display simultaneously will depend on your video card, the
speed of your computer, the maximum frame rate (➝P. 157)
configured with Viewer setting, the video size and video quality
coming from the Camera Server and the size of each Video
Window displayed. A maximum of 16 cameras is recommended
in the Layout Area.