Draw The use case diagram for this system, and include all possible relationships between use cases (Include, Extend, Generalization) .

The system should allow employees to log in using their unique credentials.

The system should capture the employee's picture upon login and store it in a secure location.

The system should be able to track the employee's location and send this information to the admin in real-time.

The admin should be able to access and view the employee's location and picture from a central dashboard.

The system should allow employees to clock in and out, and the admin should be able to view and track the employees' working hours.

The system should allow employees to request and manage their leave from work.

The system should have a task management feature that allows employees to create and track their own tasks, as well as view and manage tasks assigned to them by the admin.

The system should have a notification system that alerts employees and the admin of important events and updates.

The system should allow employees to update their personal information.

The system should have a reporting feature that allows the admin to generate various reports.

The system should allow employees to log in using multiple methods, such as a smartphone app, a web-based interface, or a dedicated device. This will provide employees with more flexibility and ensure that they can access the system even if they cannot use their smartphone.

The system should have a backup or emergency admin who can step in and approve leave requests if the primary admin is not available. This backup admin should have the same privileges and responsibilities as the primary admin and should be able to access and manage the employee tracker system as needed.

The system should be easy to use and intuitive for both employees and the admin.

The system should be scalable and able to accommodate a growing number of employees.

The system should have a backup and recovery plan in case of any technical issues or data loss.

The system should be secure and protect the employee's personal information from unauthorized access.