$[1$:$02$ pm$,30/04/2024]$ Joe: 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 master's degree for $$5,000$ per week. PSSM has contracts with a wide range of companies and can place almost any type of professional or scientific staff members, from computer programmers to geologists to to astrophysicists.

$[1$:$11$ pm$,30/04/2024]$ Joe: $1.$ Logical Data Flow Diagram $($Level $0).$

$[1$:$11$ pm$,30/04/2024]$ Joe: UML Activity Diagram to fill staffing request use$-$cas$*$give as diagram$*$