Canon EOS R5 Mark II Advanced User's Manual page 408

Saving and Loading Custom Picture Files
Edited custom picture files can be saved to a card and used with other cameras of the same
model.
1.
Select a custom picture file to save (
2.
On the [Custom Picture] screen, select [Save
3.
Select an option.
Save to card
Saves the edited custom picture file. Select a destination, then select
[OK].
Up to 20 files can be saved. [New File] is displayed when you save the
file, unless more than 20 files have already been saved. If 20 files have
been saved, the files are overwritten with new files you save.
Load from card
Loads a custom picture file from a card. Select the file to load, then
select [OK].
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File].