Actor	system
The maintenance manager must be logged in.
	The application request manager info as ID to make login.
The manager requests a worker report, the system displays the list of workers.
	The manager make a request for all reports and bring it for manager by problems list.
The manager selects a worker from the list, then enter dates.
	The application offer a list to allow the manager to input the dates and worker type.
The system gets all the jobs assigned to the worker during this period.
	The app make a list of schedule time and save it and show it.
If the worker does not have jobs during this period, the system displays an error message.
	If the worker does not have jobs during this period, the system displays an error message.

Submit the following models for your use case done in stage 2:

1- Sequence diagram describing the solution (use MVC design)

2- Corresponding design class diagram

Use CASE tool to draw the models. Submit the models as pictures in one MS Word document file.