In the previous chapters, we have looked at how to use groups to manage multiple users in JIRA. One limitation of using groups is that groups are global in JIRA. This means that, if a user is in a group, then that user is included for all projects in that group.
In real life, this is often not the case; for example, suppose a user is a manager in a project. He/she may not be a manager in a different project. This becomes a serious problem when it comes to configuring permissions and notifications.
So, to address this limitation, JIRA provides us with project roles. Project roles are similar to groups; the only difference being that the membership of a project role is defined at the project level.