ADJ

qualified, skilled, trained
key
senior
management
authorized
Only authorized personnel have access to the computer system
company, corporate
army, military, security (force), service
an employment agency for ex-service personnel
civilian
government, state
hospital, medical
administrative
technical

VERB + PERSONNEL

be in, work in
He's is in personnel, isn't he?

PERSONNEL + NOUN

department
director, manager, officer
records