Create an Activity Diagram using the following case.

Professional and Scientific Staff Management (PSSM) is a unique type of temporary staffing agency. Many organizations today hire highly skilled technical employees on a short-term, temporary basis to assist with special projects or to provide a needed technical skill. PSSM negotiates contracts with its client companies in which it agrees to provide temporary staff in specific job categories for a specified cost. For example, PSSM has a contract with an oil and gas exploration company in which it agrees to supply geologists with at least a masters degree for $8,000 per week. PSSM has contracts with a wide range of companies and can place almost any type of professional or scientific staff members, from systems analysts to geologists to astrophysicists. When a PSSM client company determines that it will need a temporary professional or scientific employee, it issues a placement request against the contract it had previously negotiated with PSSM. When PSSMs Placement Manager receives a placement request, the contract number referenced on the placement request is entered into the contract database. Using information from the database, the Placement Manager reviews the terms and conditions of the contract and determines whether the placement request is valid. The placement request is valid if the contract has not expired, the type of professional or scientific employee requested is listed on the original contract, and the requested fee falls within the negotiated fee range. If the placement request is not valid, the Placement Manager sends the placement request back to the client and notifies them why the placement request cannot be filled: a copy of the notification is filed. If the placement request is valid, the Placement Manager enters details of the placement into the database, creating an open placement request. The placement request is then sent to the PSSM Deployment Division. In the Deployment Division, the type of staff member, experience, and qualifications set out in the placement request are used to search the database of available professional and scientific staff. If a qualified individual is found, he or she is marked reserved in the staff database. If a qualified individual cannot be found in the database or is not immediately available, the Deployment Division creates a memo that explains the inability to meet the placement request and attaches it to the placement request. All placement requests are then sent to the office of the Controller. In the office of the Controller, the prospective temporary employee is contacted and invited to agree to the placement. After the placement details have been finalized and agreed to, the staff member is marked placed in the database. A copy of the placement request and a bill for the placement fee is sent to the client. Finally, the placement request, the unable-to-fill memo (if any), and a copy of the bill for the placement are sent to the Placement Manager. If the placement request was filled, the Placement Manager closes the open placement request in the database. If the placement request could not be filled, the client is notified. The placement request, placement fee bill, and unable-to-fill memo are then filed.