How to change a user’s ID on Mac OS X Version 10.6 and above (10.6 “Snow Leopard”, 10.7 “Lion”, 10.8 “Mountain Lion”, 10.9 “Mavericks”, 10.10 “Yosemite”, 10.11 “El Capitan”, 10.12 “Sierra”, 10.13 “High Sierra” and 10.14 “Mojave”)