A good performance appraisal system should include two aspects, one is performance indicators, usually KPI. As for how to formulate KPI indicators, it will be relatively simple. That is, what indicators the company cares about, such as sales and profit, and then break it down to see what factors will affect the company's indicators, such as manufacturing cost, quality cost, timely delivery rate and so on. Then contact the department according to these. . .
What is more difficult to grasp is the performance part. Most enterprises are leaders who grade their subordinates according to their impressions. This is a very unscientific way, which will produce a lot of negative emotions. Specifically, you can look at this article: performance appraisal of all employees.