This document discusses how to cancel orders individually, in bulk, and check cancelled orders on an e-commerce platform. To cancel a single order, the user clicks "Confirm & Pack", then "Reject item" and selects a cancellation reason. To cancel multiple orders, the user selects orders, downloads them as a CSV file, then clicks "Bulk Cancel" and uploads the CSV file. Cancelled orders can be viewed on the "Orders" tab by selecting the "Cancelled" filter.