Canon EOS R6 Mark II Mirrorless Camera with 24-105mm f/4-7.1 Lens - Manual (Page 597)

2.
Select [Select images].
3.
Select the image to protect.
Turn the < > dial to select an image to protect.
4.
Protect the image.
Press the < > button to protect the selected image, after which it will
be labeled with a [ ] icon (1) at the top of the screen.
To cancel protection and clear the [ ] icon, press the < > button
again.
To protect another image, repeat steps 3 and 4.
Note
You can protect individual images during playback by pressing the < >
button when [ Protect ] is assigned to [ : btn function ] ( ).
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