Note there is a bug in this which I have logged and has been sent back to development team....
User logs in via SSO and has camera and sensor role XXXXX which permits Full Sensor Access & camera RO access.
However when they go to the MT11 Calibration tab, enter a Reference Reading and then click Save changes they get the error "Changes weren't saved. There was an unexpected issue trying to save changes. Please try to submit changes again."
Works fine for me as a Full Org admin via SSO.