Epson manual q, q

Projecting Two Images Simultaneously (Split Screen) 36
Operating Procedures
Projecting on a split screen
Procedure
APress the [Split] button on the remote control while the
projector is projecting.
The currently selected input source will be displayed on the left
screen.
qThe split screen can also be started from Split Screen on the configuration
menu. sp.65
BPress the [Menu] button on the remote control or the control
panel.
The Split Screen Setup will be displayed.
qThe Split Screen Setup will also be displayed when the [Source Search]
button is pressed on the control panel or when a Source or the [Search]
button is pressed on the remote control.
CSelect "Source" and press the [Enter] button.
DSelect each input source for "Left" and "Right".
Only the input sources that can be combined can be selected.
s"Input Sources for Split Screen Projection" p.35
Remote Control