OK, so all you need to do is to add code for second email in the same place:
if ( isset( $_POST['submit']) ) {
$ch_name = $_POST['ch_f_name'];
$ch_phone_num = $_POST['ch_phone_num'];
$ch_email = $_POST['ch_email'];
$ch_company = $_POST['ch_company'];
$ch_job_title = $_POST['ch_job_title'];
$to = $ch_email;
$subject = "Thank you for job Submission ";
$content = "'.$ch_name.'";
$headers="MIME-Version: 1.0" . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$headers .= 'From: Job Post at [email protected]' . "\r\n";
wp_mail( $to, $subject, $content, $headers );
// And here goes second email:
$admin_email = get_option( 'admin_email' );
$headers="From: Job Post at [email protected]" . "\r\n";
wp_mail(
$admin_email,
'Subject of second email',
'Message content',
$headers
);
}