Reviewers interviewing a warehouse supervisor in Linkou do not need a slide deck about internal control theory. They need the person who actually releases goods to walk through a real shipment from order to gate pass.
Select two or three completed transactions in advance. Print the sales order, picking list, delivery note, and invoice. Ask the process owner to narrate the path once with you present, and note where their description diverges from the written procedure.
If the divergence is harmless—a stamp used instead of a signature—document it and keep the sample. If the divergence means a control is not operating, fix the sample set before the reviewer sits down, or be ready with a compensating control explanation.
Schedule walkthroughs early in the day when plant noise is lower and translators, if needed, are available. A rushed late-afternoon session produces incomplete notes and more follow-ups.