Why am I unable to see the option for maintaining different price categories for my products?

In BUSY, We have option that Either we can specify price for an item from A to Z Category for different party OR  we can use party wise price structure.
Please Follow the Below Steps for Party Wise Structure :
Step 1: Go to Administration menu and then Configuration tab
Step 2: And then select Features and Options and select Inventory option.
Step 3: Click on Items pricing mode in Voucher option
Step 4: Select Party item wise price and discount structure with mode as per your requirement.
Step 5:  now,Go to Administration menu and then Configuration tab
Step 6: select Party-Item price structure option
Step 7: and Select Party and Items then specify Item prices.
Step 8: During Voucher Entry, As per the party item price will auto pick and reflect in invoice.
Please Follow the Below Steps for Multiple Price list:
Step 1: Go to Administration menu and then Configuration tab
Step 2:  And then select Features and Options and select Inventory option.
Step 3: Click on Items pricing mode in Voucher option
Step 4: Select the Multiple Price List Option for Sae/Purchase.
Step 5: Open the Item Master and Specify the Price Category from  A to Z.
Step 6: Either can fix the Category in party master and can select during voucher enrty.