I use the service desk and this is the scenarion.
A customer who belongs to one organization can see all his tickets (even he is not part of them). However when he adds a comment, I would expect to become a watcher or request participant so he can receive emails as update when there is an update. That is not the case.
Just to mention that the user is a service desk customer.
Can you help me achieve this functionality? Thus when a user comments on a ticket, becomes ideally request participant or watcher (I am not sure if it applies for the customers)/