Hibernate model scanPackages()

I am new in spring mvc.

i have multiple hibernate model classes in different packages.

@Bean
public SessionFactory sessionFactory() {
    LocalSessionFactoryBuilder builder = new LocalSessionFactoryBuilder(dataSource());
    builder
        .scanPackages("com.chaitanya.users.model")
        .scanPackages("com.chaitanya.department.model")
        .addProperties(getHibernateProperties());

    return builder.buildSessionFactory();
}'

Is this right way to define model in different packages or should i define all model in one package so that no need to write multiple scanPackage() .

There will be muliple model in application so should we need to write scanPackages for all model. Please explain this method and solved my queries regarding this..

Thanks in advance.