Set per-user access in the admin portal and MES portal
Give each user the right access level and MES role by setting their permissions in both the admin portal and the MES portal.
Per-user access is set in two places: the admin portal's User Management and the MES portal's Users page.
The MES portal's Users page has Add user / Edit user.
The MES portal's Users page sets the MES roles (MES Admin, MES Operator) and the user's tracking stations.