You cannot restrict a user to view only one customer's information for orders or stock in DeltaWMS. However, you can set default account and site values for a user through User Account settings. When you do this, the system automatically populates these values when the user creates orders or receipts.
📌Note: Setting default values doesn't restrict the user's visibility—they can still view information for other customers. It only pre-fills fields to save time during order or receipt creation.