funtions.php

function catchresponsive_child_widgets_init() {
    //Optional Sidebar two for page and post
    register_sidebar( array(
        'name'              => __( 'Optional Sidebar Four', 'catch-responsive-pro' ),
        'id'                => 'sidebar-optional-four',
        'description'       => __( 'This is Optional Sidebar Four', 'catch-responsive-pro' ),
        'before_widget'     => '<section id="%1$s" class="widget %2$s"><div class="widget-wrap">',
        'after_widget'      => '</div><!-- .widget-wrap --></section>',
        'before_title'      => '<h4 class="widget-title">',
        'after_title'       => '</h4>',
    ) );

    //Optional Sidebar Five for page and post
    register_sidebar( array(
        'name'              => __( 'Optional Sidebar Five', 'catch-responsive-pro' ),
        'id'                => 'sidebar-optional-five',
        'description'       => __( 'This is Optional Sidebar Five', 'catch-responsive-pro' ),
        'before_widget'     => '<section id="%1$s" class="widget %2$s"><div class="widget-wrap">',
        'after_widget'      => '</div><!-- .widget-wrap --></section>',
        'before_title'      => '<h4 class="widget-title">',
        'after_title'       => '</h4>',
    ) );

        /* You can add as many widgets as you want to.*/
}
add_action( 'widgets_init', 'catchresponsive_child_widgets_init', 99 );

/**
 * Returns an array of metabox sidebar options registered for catchresponsive.
 *
 * @since Catch Responsive 1.0
 */
function catchresponsive_metabox_sidebar_options() {
    $sidebar_options = array(
        'main-sidebar' => array(
            'id'        => 'catchresponsive-sidebar-options',
            'value'     => 'default-sidebar',
            'label'     => esc_html__( 'Default Sidebar', 'catch-responsive-pro' )
        ),
        'optional-sidebar-one' => array(
            'id'    => 'catchresponsive-sidebar-options',
            'value' => 'optional-sidebar-one',
            'label' => esc_html__( 'Optional Sidebar One', 'catch-responsive-pro' )
        ),
        'optional-sidebar-two' => array(
            'id'    => 'catchresponsive-sidebar-options',
            'value' => 'optional-sidebar-two',
            'label' => esc_html__( 'Optional Sidebar Two', 'catch-responsive-pro' )
        ),
        'optional-sidebar-three' => array(
            'id'    => 'catchresponsive-sidebar-options',
            'value' => 'optional-sidebar-three',
            'label' => esc_html__( 'Optional Sidebar three', 'catch-responsive-pro' )
        ),
        'optional-sidebar-four' => array(
            'id'    => 'catchresponsive-sidebar-options',
            'value' => 'optional-sidebar-four',
            'label' => esc_html__( 'Optional Sidebar Four', 'catch-responsive-pro' )
        ),
        'optional-sidebar-five' => array(
            'id'    => 'catchresponsive-sidebar-options',
            'value' => 'optional-sidebar-five',
            'label' => esc_html__( 'Optional Sidebar Five', 'catch-responsive-pro' )
        )
    );
    return apply_filters( 'sidebar_options', $sidebar_options );
}