How to add IMCE Browser to Multi Image Upload Field in Drupal 7?

We need to alter the UI of image_miw widget and add the checkbox to select IMCE under the manage fields section of Content Type

/**
 * Implements hook_form_FORM_ID_alter().
 */
function custom_form_field_ui_field_edit_form_alter(&$form, &$form_state) {
  $instance = $form['#instance'];
  if ($instance['widget']['type'] == 'image_miw') {
    $form['instance']['widget']['settings'] += array('imce_filefield_on' => array(
      '#type' => 'checkbox',
      '#title' => t('Allow users to select files from <a href="!url">IMCE File Browser</a> for this field.', array('!url' => url('admin/config/media/imce'))),
      '#default_value' => $instance['widget']['settings']['imce_filefield_on'],
      '#weight' => 16,
    ));
  }
}

/**
 * Implements hook_field_widget_info_alter().
 */
function custom_field_widget_info_alter(&$info) {
  if (isset($info['image_miw'])) {
    $info['image_miw']['settings']['imce_filefield_on'] = 0;
  }
}

Add IMCE Field Process functions to  mfw_managed_file Field

/**
 * Implements hook_element_info().
 */

function custom_element_info() {
  $elements = array();
  $elements['mfw_managed_file']['#process'] = array('imce_filefield_field_process');
  $elements['mfw_managed_file']['#pre_render'] = array('imce_filefield_field_pre_render');
  $elements['mfw_managed_file']['#file_value_callbacks'] = array('imce_filefield_field_value');
  return $elements;
}