How to change commission for the specific product?
To have unique commission rules for an individual product, you can create a product-based commission modifier. To set it up, go here and click New Commission Modifier.
In modifier type, select Product-based commission.
Please carefully read the note below, as it explains how the commission modifier works with the base commission rules.
Then specify the product, type, and the value of the modifier.
Lastly, create a modifier's name and description for it.
Well done! You've just created a product-based commission modifier.