Go to schema.json file located in src/app/schema.json and edit the JSON schema to fit your needs.
You can find the optional icons here: https://material.io/tools/icons/?style=baseline
Run ng serve for a dev server. Navigate to http://localhost:4200/. The app will automatically reload if you change any of the source files.
Run ng build to build the project. The build artifacts will be stored in the dist/ directory. Use the --prod flag for a production build.