ORC - Alert compose notification customization

Summary

Is it possible to insert tokens or attachments in alert composer notifications?

Content

Hi,

I would like to insert tokens in an Alert Composer notification (IRC_Agent_Invite_Alert), in order to show in the message some information. Specifically, I need to display in the correspondence some fields that are part of the "Details" section of the Job Requisition. Some of these fields are flexfields.
In the alert composer page I don't find the way to do this. Does someone know if something like this is possible?
Another way to reach our need could be the possibility to add attachments in the alert composer notification.