Before adding new staff please check your list to ensure they are not already created.
User roles are:
Non-User; No access to dashboard, no log-in details, classified as a potential borrower.
User; Basic use. This user can log items in/out and see reports, but cannot add/edit properties/keys.
Power User; Can edit staff, properties, assets etc., but cannot access Admin Settings page.
Super User; Highest role, has permissions to access and edit everything.
Always create your staff emails in lower case.