The People tab shows information about
People in the project
Groups in the project
Project Lead
People
This section shows
People assigned to any project role
Groups assigned to any project role
All people counter (summarized from unique people + people from groups)
Project Lead
Default Assignee
People source
Directly added (can be found below)
Added via Group (can be found below, in a group)
Added via both (can be found below, both way)
Group membership
This section shows
Members of the selected group
Members can be searched and paged