Step 1 : On your Unify Enterprise Edition Dashboard, go to "File >> Configure Store".
Step 2 : On the Store Setup screen go to "Products >> Product Sync Settings tab".
Step 3 : Here select the Use QuickBooks data as master data option as your master data.
Step 4 : Now click on Product Sync Rule button.
Step 5 : On the Product Sync Rule window, you will see the stores which are connected to the same QuickBooks company file. Here you can select the store for which you want to enable the Multi Sync by selecting Enable Multi Sync check-box. You can also use different rules for different stores by using Quantity Rule and Price Rule drop-down.
Step 6 : After setting-up the rules, click on the Save button.