How can a user automatically watch any issue created by a specific team of people?

[Alex Hadden-Boyd]

I have a user who wants to be able to automatically watch any issue that is created by his team

[Nic Thiele]

For others' benefit, Jira Data Centre has a "Watchers" project role. This should provide this functionality but I haven't used it myself.

[Hazwan Ariffin]

Not possible. To create automation, something other than watching issues needs to be triggered, such as issue transition, issue creation, modification or etc.

I've checked to see if watch issue is considered issue update, but that seems no. So no, this is not possible. But with an add on, this is possible. There's an add on called Autowatch for JIRA that can help you auto watch an issue based on criteria or JQL. So you can have something like

JQL - reporter in (list of the users in the team)
Users - The watcher