Canon EOS R6 Mark II Mirrorless Camera with 24-105mm f/4-7.1 Lens - Manual (Page 729)

3.
Select images to send.
Turn the < > dial to select an image to send, then press the < >
button.
To switch to selecting images from 3-image display, turn the < >
dial counterclockwise. To return to single-image display, turn the
<
> dial clockwise.
After selecting the images to send, press the < > button.
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