This document provides instructions for capturing IMEI numbers during order processing. It describes how to access the order fulfillment tab in the store manager interface. When selling products that require IMEI numbers, a popup will prompt the user to enter the IMEI. They have the option to associate IMEI numbers one by one or upload them in bulk via CSV file. The CSV file format requires specifying single or dual SIM and including one or two IMEI numbers accordingly. Once IMEI numbers are associated, users can fill quantities and proceed to fulfill the order to generate a shipping label and tax invoice.