The information Ted offered access to is not 'needed'.
But it can be of assistance when someone with a lack of understanding needs more in the way of assistance/knowledge.
And it is linked to on the User Guide page for LG TVs on this website.
However, LG TVs can be rather quirky, and when a LUT doesn't 'apply', swapping input modes, or even powering off/on the TV can rectify the issue.
Such quirks have nothing to do with the calibration software.
Hiring a professional may be a good approach for you - at least initially
But, the LGs drift a lot - far more than professional monitors - and need recalibration on a regular basis.
That is why getting to grips with calibration is a good idea for any facility, especially smaller, independent ones.
Steve
Steve Shaw
Mob Boss at Light Illusion