Override selection for one customer
Advanced Config adds a Pricesystem section to the customer edit form. Use it for an exceptional contract that cannot follow the customer's normal group strategy.
The customer can use Lowest, Highest, the system configuration, a custom sort order or an individual formula. A saved customer-specific sort order is treated as an explicit override.
Before adding one, check whether a direct Customer Price or a separate Price List would represent the agreement more clearly. A selection override changes how all available price types are compared, not just one product.
After saving, clean the Price System cache and test both a product with several candidates and one with only a catalog price.