You can find the split screen button in your Projector toolbox (rectangle with a 1/2 in it). You can also navigate to split screen by pressing the home button and selecting split screen.
Plug in both devices (only one will remain interactive - the one with the USB cord). From the remote you can select HDMI/Video to choose what devices should be projected and on what side you want views. (I.E. Computer 1 on the right, and HDMI 1 on the left).
Can also use the SPLIT button on the remote, to exit press the SPLIT button again. It will default to the last used screen display
Plug in both devices (only one will remain interactive - the one with the USB cord). From the remote you can select HDMI/Video to choose what devices should be projected and on what side you want views. (I.E. Computer 1 on the right, and HDMI 1 on the left).
Can also use the SPLIT button on the remote, to exit press the SPLIT button again. It will default to the last used screen display