How to add additional people to CC list of IPS?

Yes, I meant IPS... Once I add someone's username in the form @<username> to the comments to the IPS, this user will be subscribed to the thread/case until it will be closed or I need to add his/her username each time I add a comment to the thread/case?

Can you double check if you have IPS account? If yes, can you provide us the IPS detail e.g. IPS case number? So that I can point you to the correct direction.

any update?

I've asked our FAE to open me an IPS account. Meanwhile you can close this case, thank you