The minimum would be the Calman software, which isn’t worth it unless you are calibrating as already stated.
I don’t think the modes can be renamed to my knowledge. They are the same as Custom, except for the 20 point controls, that you can’t really access without the Bravia app connected to Calman. The TVs menu still only shows 10-points. The extra point adjustments are unseen except for in Calman.
Not really purposeful unless you have a meter and want to create two separate modes for Day and Night. I have the same settings for Custom, Custom 1, and Custom 2. They all look identical, so there isn’t really anything else special about those modes.
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