Canon EOS R5 C VR Creator Kit with RF 5.2mm f/2.8 Dual Fisheye Lens - Manual (Page 406)

3.
Specify the range of images.
Select the first image (start point).
Next, select the last image (end point). A checkmark [ ] will be
appended to all the images within the range between first and last
images.
To select another image to copy, repeat step 3.
406