Genuine Toshiba owner's manual. Couldn't really ask for more. And written in understandable English in contrast to a few recent experiences I have had with manuals for other equipment other than Toshiba but made in China and written in "Chinglish"!
Text excerpt from page 23 (click to view)
Viewing Live Camera Images
Changing the Layout of the Split Screens
1. Press the [MENU] button. â¢ Open the menus in accordance with the instructions provided in MENU Screen Operations (page 17) in the sequence of [MENU] â [LIVE PICTURE]. â¢ The layout pattern name that is set is displayed at the center of the screen. â¢ First of all, the âQUAD-Aâ screen will be displayed. * The layout cannot be changed when in the playback mode. â¢ Press the  button to select the black screen. â¢ Press the [SEQUENCE] button for at least one second to return the blue border to the previous sub-screen and display the screen as it was prior to amendment. 5. Press the [SPLIT] button. â¢ The split-screen selection screen will be displayed. Repeat procedures 2 to 5 to change the â6 WAYâ, â9 WAYâ or any other split-screen display layouts. 6. Press the [RETURN] button. â¢ A confirmation screen will be displayed.
A SET CONTENT WAS CHANGED. DO YOU UPDATE THIS CONTENT?
2. Press [ / ] to select the split layout required. â¢ Changes sequentially in the order of âQUAD-Aâ â âQUAD-Bâ â âQUAD-Câ â â6 WAYâ â â9 WAYâ â âQUAD-Aâ when [ ] is pressed.
* The above is an example of âQUADâ screen. 7. Select âSAVEâ with [ / ], and then press the [SET]
3. Press the [SET] button. â¢ The sub-screen will be displayed within the blue border at the top left-hand side of the screen.
button. â¢ Changes the layout of the split screen. * Press [CANCEL] to return to the top menu screen. CAUTION It is not possible to set âQUAD-Aâ, âQUAD-Bâ and âQUAD-Câ at the same location when setting up the layout for âQUADâ screens.
* The above is an example of âQUADâ screen. 4. Press any of the  to  buttons. â¢ The camera input that corresponds to the number pressed will be displayed as a sub-screen inside the blue border. â¢ The blue border moves to the next sub-screen.