Both owners and admin of a Workspace can create and manage teams, while supervisor can access data of their own team when they enter their dashboard.
As a user of a team, I can only access data related to my calls and my own recordings. I am unable to add or remove team members and I can't access this specific area of the Workspace.
As a supervisor, I have access to the activity related to my team, as well as their recordings. I am unable to add or remove team members to my team as this is something that only admins and the owner of a workspace can do.
As an admin of a workspace, I can add/remove users from a team, or create a new team from scratches. As an admin, I also have access to the activity of all users within the workspace I manage (including recordings), regardless the team they're part of.
You can find out more about roles and rights here.