With YouTrack 6.5 we introduced the concept of a project team. A Team incorporates user groups and users with a team role granted in its project.
A role is considered a team role if it has the team flag. By default, a new YouTrack has two team roles: the Project Admin and Developer. You can also create your own team roles, by marking them with the team role flag.
A project team is created automatically while creating a new project, and by default contains:
- the project's administrator — a user who created the project is granted the Project Admin role in this project.
- a newly created user group <project_name>-team which is granted the default Developer role.
Project Team vs Project Assignees
Project Team is not the list of project Assignees. The Team incorporates all users that have any team role in the project (and thus have respective access to the project) and represents an actual team of an actual project. And like in any real-life project, not all members of the team are (nor should be) assignees in a project in the tracker. Likewise, a user might not be a member of the Team, but still can be a potential assignee for issues in the project. In terms of YouTrack, Project Assignees is actually a set of issue field values containing the list of users who can be assigned an issue in the tracker. Please refer to the Managing Project Assignees doc page for details on configuring the list of possible assignees in a project.
For more information about project team please see this article.