Notification problems



I have a problem with the notifications in Requests. We use resources in PPM , but we cannot send an email for resources that is working on a request.


I can see the resources on kcrt_rt_request_resources table on db, but I cannot send any notification because there is not any token for that.


Also,  there is another problem with notifications. I want to send notification when any users in request add a note. I can see all fields in db, but I cannot know how to send notification mails for that.