(help)Use this business description to make an ERD.

A grocery store wants to keep track of its departments and employees. For each department, the store wants to record a department ID, a name, and a location. For each employee, the store wants to record an ID, a first name, a last name, a start date, and a phone number. A department can have many employees. The store wants to be able to assign employees in more than one department. Part time employees can be assigned to work in different departments on different days of the week. In addition we need to reflect a management relationship. A department has no manager, but an employee can manage many other employees and an employee is always managed by another employee (the manager).