What is the difference between the calculation types: Linear, Highest, and Lowest?

The calculation type determines how the achievement percentage is converted into a commission when it falls between two tiers. Using the same scenario: target is 10,000, achievement is 6,500 (65%), and the two surrounding tiers are 60% → 400 and 100% → 2,000:

• Linear: Distributes the commission proportionally between the two tiers. Commission = 400 + (2,000 − 400) × (65% − 60%) ÷ (100% − 60%) = 600.
• Highest: Uses the next tier above the achievement percentage. Commission = 2,000.
• Lowest: Uses the last tier the employee fully reached. Commission = 400.