Hello!
There is no "4K60fps" mode on the R10. These are the options available:
You want to select 4K Crop 59.94P - equivalent to 4K60P in everyday terms.
You'll find the instructions for that HERE.
I hope this helps, but if you need one-on-one guidance, don't hesitate to reach out to support at 800-OK-CANON (800-652-2666), Monday through Friday from 9am to 9pm (ET), and Saturdays from 9am to 8pm (ET).
If you live outside the United States, please CLICK HERE and select your country or region for your support needs.
