For customizing the template's default site settings:

[your-frontend-project] = admin [rest] or shop

If you want to customize the site settings such as site info, default(logo, language , currency code),navigation etc, you can easily change those settings from [your-frontend-project]/src/settings/site.settings.ts

In this file, find your required settings key and change it's value according to your need.

For example, If you want to change the currencyCode : please go to [your-frontend-project]/src/settings/site.settings.ts and find the following portions and change it.

currencyCode: "USD";

NOTE ** Some of these options are customizable through ADMIN Dashboard.