Click on the Distributor option in the left hand menu or under the General section on the home page to go to the Distributor Search interface.
Search for the member in your system by providing the Username, Name or any other relative criteria, and then by clicking on the Search button.
If you are not sure about the search criteria, i.e. username or name of the member, then simply click on the Search button without specifying any of the fields to get the complete list of all the members in your system. And then click on the ID Number for the user you want to delete an order.
Once you are in the Distributor Maintenance area of the member, click on the Invoices option in the left hand menu to go to the invoice listing page.
You will then be redirected to the Distributor Invoices page, where you can click on the OrderNum link to open that invoice for editing purposes.
This will bring up that order invoice with full details. Notice that you can update the Order Date, Status and the Payment Type of the order. Open the Status drop-list and select the Deleted option. Once done, click on the Update button to confirm your action. Be careful, the process is irreversible.