is there a way to disable the multi user vendor feature such that only the admin can post virutal product.

i want to make this site such that the Ad publishing is completely disabled for other users beside the Admin.

@uchihaboy
Remove publish/edit buttons and all sections related to it and to top of item-post.php & item-edit.php put something like this:
<?php
  if(!osc_is_admin_user_logged_in()) {
    osc_add_flash_error_message(__('Sorry, publishing is not available right now', 'theme'));
    header('Location:'. osc_base_url());
    exit;
  }
?>