How to change the status of the order to complete?

Step 1: Select the "order details" tab on the side menu.

Step 2: Select current order details and click on the "view" button to process the order.

Step 3: Click "Start Processing" on the order details. After finishing the order, click on the "complete" button.

 Step 4: After completing the order, it will move to "Completed Order Details."