To translate theme's locale to your language. You need to add a json file resources/lang or
in platform/themes/your-theme/lang
Ex: Create file resources/lang/es.json
{
"Home": "Casa"
}Reference: Laravel JSON translation document https://laravel.com/docs/5.7/localization#using-translation-strings-as-keys
To add new locale for your project, you need to copy resources/lang/en to your language. Ex: resources/lang/es and
translate it to your language.
If you can run command, you can run php artisan cms:locale:create <locale> to quick add new locale.
To remove a locale, you can delete it in resources/lang or run command php artisan cms:locale:remove <locale>
::: tip
To use commands, you may need to run composer install to install dev-tool package.
:::
Reference: https://laravel.com/docs/5.7/localization#using-short-keys