Thank you for reply sir..when staff was login in to the form.they can editing contacts.How can i disable editing option.

Hi rajeev
To disable editing option for "staff". open "web/staff/app/cls_ps_addresses.inc.php" and add

if ( !$this->sys->IsAdmin() ) exit;

after

case 'edit_inp':

The result should look like:

   case 'edit_inp': if ( !$this->sys->IsAdmin() ) exit;

Do the same for "case 'edit_done':" line.