How to change “macOS default” for Xcode build settings?

(Didn’t get any answers or comments on StackOverflow.)

Where/ how to set the macOS default for any Xcode setting? I’m interested in the setting shown below.

I know how to change the project setting using config files/ setting using CMake, but changing macOS default will make creating projects easier.

//:configuration = Debug

//:configuration = Release

//:completeSettings = some

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