The way this would be done natively within JIRA would be via a Postfunction, however, there is not a post function in JIRA to add a watcher or update that particular field. In light of this you would need to use an add-on like ScriptRunner or Bob Swift's Update on Transition for JIRA.
Hi all! My name is Miles and I work on the Marketplace team. We’re looking for better ways to recommend and suggest apps that are truly crowd favorites, so of course we wanted to poll the Community. ...
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