Hub provides a set of predefined default roles: System Admin, Project Admin, Developer, and Observer. For a comparison of the default permissions granted to default roles, see Permissions Comparison for Default Roles.
You cannot delete the System Admin, Project Admin, or Developer roles. However, you can update the set of permissions that are assigned to these roles, change their names, and modify their descriptions.
This role is assigned all available permissions in Hub.
The Observer role is intended for use by users who monitor the progress of a project. This role basically enables read-only access for a project. This role is assigned the following permissions by default: