Due Saturday by 11:59pm Points 50 Submitting an external tool Submit by Saturday 11:59 p.m. . (1) Describe four operational functions of a performance appraisal system. (2) Can all four functions be accomplished with one appraisal method? Why or why not? (3) How has performance appraisal contributed to perceptions that civil service systems are inefficient or ineffective, in comparison with those systems based on employment-at-will? . Requirements: 750 minimum words in proper APA format. Assignment Dashboard > Unit 6: Writing Assignment Upload Submission