Add new widget areas to a Wordpress theme, then you must add some code to files where you want the widget or add them here via 'hooks'

functions.php

<?php

function register_widget_area() {
  
  add_action( 'widgets_init', 'register_widget_area' );
  
	// Hero widget area
    if( function_exists( 'register_sidebar' ) ) {
        register_sidebar( array(
            'name' => 'Hero Widget',
            'id' => 'hero_widget',
            'description' => "Hero widget description in admin",
            'before_widget' => '<aside class="hero">',
            'after_widget' => '</aside>',
            'before_title' => '<h1 class="title">',
            'after_title' => '</h1>',
        ) );
    }
	
	// Top Contact widget area
    if( function_exists( 'register_sidebar' ) ) {
        register_sidebar( array(
            'name' => 'Top Contact',
            'id' => 'top_contact',
            'description' => "Top Contact widget displayed on all pages",
            'before_widget' => '<aside class="top-contact">',
            'after_widget' => '</aside>',
            'before_title' => '<h1 class="title">',
            'after_title' => '</h1>',
        ) );
    }
	
}


?>