How KPI can be assigned for each work ? can anyone explain the process.

1. analyze work processes to identify deliverables ,  Supplier, Input, Tools and techniques, output, and customer of each step.

2. Identify stakeholders, and requirements of each step.

3. Identify and categorize critical points (critical to quality, critical to cost, etc.) , constrains, and required controls.

4. set required KPIs for each deliverable which should be SMART (Specific, ,measurable, Achievable, Realistic, and timed).

5. assign wight for each indicator.