1) Log into "Seller Dashboard", at "Seller Centre" select "My Sales"
2) At "Shop orders" centre, you can manage the order status according to the order process.
Processed - To tell the buyer their order is under processing.
Shipped - To tell the buyer their order is already ship out.
Delivered - Only select this status after buyer has received their order. You can check the delivery status with courier service.
Cancelledd - Cancel order.