User roles and permissions

When adding new users, it is necessary to define their user roles. 

• Administrators are users with administrator permissions. In simple terms, they are highest-level users with all permissions, including those to modify and edit other users' user roles and credentials (on the same account).
  
  
• Cashiers are users with limited permissions. They can issue invoices, and they can only see the invoices they’ve issued and can not cancel invoices nor refund payments. Cashiers are not allowed to add or edit products. They cannot see the reports.

Assigning more than one user role per user is not allowed.