That would result in tabs for
- Supplier
- Customers
- Employees
- Expense Claimer
An actual business contact can also be more than one of these at a time, yet given this structure Manager can not report on all the dealings with that entity in one place or give a total.
If Manager was to have a single “Contacts” or “Address book” which contained a single entry for each business entity together with a check box to indicate if they appeared in the Supplier, Customers, Employees, or Expense Claimer list then combined reporting could be done.