Goal: To develop a software system for Professional and Scientific Staff Management (PSSM) that automates the process of matching client requests for temporary professional and scientific staff with qualified candidates and facilitates the placement of the selected candidate.

Functional Requirements:

- The system should allow PSSM contract managers to enter contract details into the contract database, including job categories and negotiated fees.

-The system should allow PSSM contract managers to validate staffing requests against the contract database.

-The system should allow the placement department to search the staff database for qualified individuals matching the job category, experience, and qualifications requested in the staffing request. -The system should allow the placement department to mark qualified individuals as "reserved" in the staff database.

-The system should allow the arrangement department to contact the selected candidate and confirm placement details.

-The system should allow the arrangement department to mark the selected candidate as "placed" in the staff database.

-The system should generate a bill for the placement fee and send it to the client. -The system should allow the contract manager to close open staffing requests in the staffing request database if the staffing request has been filled.

-The system should notify the client if the staffing request could not be filled.

-The system should maintain a record of all staffing requests, including filled and unfilled requests, placement fee bills, and "unable to fill" memos.

TASK: By using programs like Visual Paradigm or anything similar in fucntionality, create an activity diagram that illustrates all the requirements above