Prices are controlled through "Trading Condition Settings" and products through "Catalogs": 1. In Company Basic Settings, go to Price Classification Settings and create price classifications (for example, Standard, VIP, Distributor). For each product, fill in the price levels for each classification. 2. Go to Trading Condition Setting and click Add to create condition sets. For each set, configure the currency and Adjustments (add/subtract % or amount). Open the price levels your buyers can see and use Add Buyer to include them in the set. 3. Go to the Catalog Layout page, click Add Catalog, select products in "Categories and Products," and add buyers in "Visible To." 4. After making changes, click Upload Changes on the Catalog page so buyers see the updated prices and content. Each buyer is assigned only one Trading Condition Setting at a time. Conditions are shared, so changing one affects all parties using it. Use the Preview As feature on the Catalog to confirm what a specific buyer sees.