Yealink VC400 User Manual page 121

When the local system is sharing a presentation during a call, presentation will be shown in

big size, and other video images will be shown in small sizes.
To change screen layout via the remote control:
Press (Layout soft key) during an active call.
1.
The display device shows all video thumbnails and three layout soft keys.
Press or to select a video.
2.
Press the desired layout soft key.
3.
For example, if you select
Using the VC400 Video Conferencing System
PC presentation
, the video layout will be shown as below.
Far end
Local
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