Based on the following data requirements and business rules, create an ER Model for PerfectFit Athletics $($PA$).$

PA operates multiple locations in Central Arkansas. PA offers a variety of classes $($e$.$g$.,$ yoga, spinning, swimming $...)$ for their members. Member information $($such as member ID$,$ first name, last name, phone number, address, membership start date and membership expiration date$)$ are maintained in the system.

Each member is assisted by an employee. An employee assists one or more members. Employee information $($including employee ID$,$ first name, last name, address and phone number$)$ is stored. There are two types of employees: coach and administrative staff. For a coach, additional information $($such as coaching event, fee and certification$)$ is stored. For administrative staff, job title is additionally stored. Each employee has a supervisor. A supervisor supervises more than one employee.

A class has one or more sections. Each section is always associated with a class. Attributes of a class include class ID$,$ class name and class points. Attributes of a section include class ID$,$ section ID$,$ type and maximum number of attendees. A member signs up for one or more sections and each section is signed up by one or more members. They want to store the member sign$-$up date and time for each section.

Each employee is assigned to a one location. A location is assigned many employees. For each location, they need to know location ID$,$ address, phone number and business hours.