Change title of "Other" meta group

add_filter('tribe_get_meta_group', 'change_custom_meta_group_title', 10, 2);

function change_custom_meta_group_title($html, $meta_group_id) {
    if ('tribe_event_group_custom_meta' !== $meta_group_id) return $html;
    $look_for = '<h3 class="tribe-events-single-section-title">Other</h3>';
    $replace_with = '<h3 class="tribe-events-single-section-title">Additional Information</h3>';
    return str_replace($look_for, $replace_with, $html);
}