Thanks for confirming this. I tested it myself and can confirm the menu item does appear once MetricKit is linked and the app is running via Xcode on a physical device — as described above. However, I noticed the actual menu path differs from what's documented: it's located at Debug > MetricKit > Simulate MetricKit Payloads, not Debug > Simulate MetricKit Payloads as the documentation states. I've filed feedback for this documentation discrepancy: FB23896803.