I have installed CMS Worflow and I am trying to configure Email notification so an email is sent when an author request a publication.

I found here that I need to add to the config file:

WorkflowRequest::set_alert('WorkflowPublicationRequest', 'request', 'XXXX', true);

My confusion is with the XXXX parameter. The code :
function set_alert($class, $event, $group, $notify) {..} seems to imply that this must be a group but when I use :

WorkflowRequest::set_alert('WorkflowPublicationRequest', 'request', 'Administrators', true); the message "...emailed to no-one" is
displayed after every "request for Publication" and the members of this group do not receive anything.

However , when I use :
WorkflowRequest::set_alert('WorkflowPublicationRequest', 'request', 'publisher', true);
the Default Admin receives a notification (and I have no group labelled 'publisher' )

Could someone be kind enough to explain to me how this works and how I can have notifications sent to members other
than the Default Admin?

Cheers,
Lise