How to make spell checker recognize character names?

In short, my fiction is character-intensive having foreign/ unusual names and Scrivener flags all my character spellings.

One solution is adding these names to the dictionary of course. But is there a way to make Scrivener automatically recognize these as characters?

The spell checker is provided by the system software – in other words, it is baked into Apple MacOs. See:

https://scrivener.tenderapp.com/help/kb/macos/spelling-dictionary