This code is to be used in your theme. First block is to go in your functions.php then the last block is to be set where you want the widgetized area to be displayed.

widgetized-example.php

/**
 * Register our sidebars and widgetized areas.
 * Add this block to your functions.php
 *
 */
function arphabet_widgets_init() {

	register_sidebar( array(
		'name' => 'Home right sidebar',
		'id' => 'home_right_1', // Take note of the ID! We'll need this to call the right widgetized area in our theme
		'before_widget' => '<div>',
		'after_widget' => '</div>',
		'before_title' => '<h2 class="rounded">',
		'after_title' => '</h2>',
	) );
}
add_action( 'widgets_init', 'arphabet_widgets_init' );


/**
 * Defines the location of where our widgetized area will be displayed
 * Add this to your theme file where you wish to display this.
 * If you want to display this in the footer, add it in the right spot in footer.php
 */
<?php dynamic_sidebar( 'home_right_1' ); ?>