Create a 2nd footer area

a second footer widget area is complex to get.

Here is the substitute for footer.php on the basis of enfold 5.6 – you can upload it to your child-theme root directory: https://pastebin.com/ndwDX00Y

that is for child-theme functions.php:

/***** insert the options dialog to Enfold Footer segment. Just after the other footer_columns ****/
function my_avf_option_page_data_add_elements( array $avia_elements = array() ){
  $slug = 'footer';
  $id = 'footer_columns';
  
  $new_element =  array(
  "slug"  => "footer",
  "name"  => __("Footer Columns Two", 'avia_framework'),
  "desc"  => __("How many columns should be displayed in your second footer", 'avia_framework'),
  "id"  => "footer_two_columns",
  "required"  => array( 'display_widgets_socket', '{contains_array}all;nosocket' ),
  "type"  => "select",
  "std"   => "4",
  "subtype" => array(
    __('1', 'avia_framework') =>'1',
    __('2', 'avia_framework') =>'2',
    __('3', 'avia_framework') =>'3',
    __('4', 'avia_framework') =>'4',
    __('5', 'avia_framework') =>'5',
    __('6', 'avia_framework') =>'6')
  );
  
  $found = false;
  $index = 0;
  
  foreach( $avia_elements as $key => $element ){
  $index++;
    if( isset( $element['id'] ) &&  ( $element['id'] == $id ) && isset( $element['slug'] ) && ( $element['slug'] == $slug ) ) { 
      $found = true;
      break;
    }
  } 
  if(! $found ){ 
    $avia_elements[] = $new_element;
  }
  else {
    $avia_elements = array_merge( array_slice( $avia_elements, 0, $index ), array( $new_element ), array_slice( $avia_elements, $index ));
  }
  return $avia_elements;
}
add_filter( 'avf_option_page_data_init', 'my_avf_option_page_data_add_elements', 10, 1 );

/*** Register new footer widget areas */
function footer_two_widgets_init() {
  $footer_two_columns = avia_get_option( 'footer_two_columns', '6' );
  for ($i = 1; $i <= $footer_two_columns; $i++){
    register_sidebar(array(
      'name' => 'Second-Footer-Column '.$i,
      'before_widget' => '<section id="%1$s" class="widget clearfix %2$s">', 
      'after_widget' => '<span class="seperator extralight-border"></span></section>', 
      'before_title' => '<h3 class="widgettitle">', 
      'after_title' => '</h3>', 
      'id'=>'av_footer_two_'.$i
    ));
  }
}
add_action( 'widgets_init', 'footer_two_widgets_init' );

some css :

#footer .container > div {
    display: flex;
    flex-flow: row wrap;
    align-items: stretch;
}

#second-column-row {
  position: relative;
  margin-top: 10px;
}

see: https://webers-web.info/#footer
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But maybe there are different approaches to achieve what you want – so describe a bit more what you want to do: