Below this line not needed. This is just for demonstration purposes.
Redux::set_section(
$opt_name,
array(
'title' => esc_html__( 'Widget Areas', 'your-textdomain-here' ),
// phpcs:ignore
// 'desc' => esc_html__( 'For full documentation on this field, visit: ', 'your-textdomain-here' ) . 'https://devs.redux.io/extensions/widget-areas.html',
'subsection' => true,
'fields' => array(
array(
'id' => 'widget_areas',
'type' => 'info',
'style' => 'info',
'notice' => true,
'title' => esc_html__( 'Widget Areas is Already Running!', 'your-textdomain-here' ),
// translators: %1$s: Widget Admin URL.
'subtitle' => sprintf( esc_html__( 'To see it in action, head over to your %1$s', 'your-textdomain-here' ), '' . esc_html__( 'Widgets page', 'your-textdomain-here' ) . ' (Applicable for Classic Widgets only).' ),
),
),
)
);