Hi, I just created a paid Standard JIRA account and have several projects. I don't mind if my colleagues can view all projects, but I would like to invite external product owners as users of individual projects and not have them get access to other projects and issues. What is the quickest and easiest way to achieve this? I really like JIRA for doing projects, but the Admin options are extremely complex and I have no idea what to do where, while expecting something like this to be super easy.
Thanks in advance!