Wiki.Cyli.Org

Pretty straight forward, this is for Windows 10 or 11, others should be very similar

Tap the trapezium, type sysdm.cpl and press 'Enter'.
Give a computer description (it's just a label).
Click the 'Change' button, in the new window that opens;
	Make sure the computer name is present.
	Click the 'Domain:' radio button and fill out the text box with 'ad.cyli.org'.
	Click the 'OK' button, a third window opens;
		Enter your username ('user@cyli.org')
		Enter your password ('MySecretPass!')
		Click 'OK'
		Click 'Reboot now'.
Login as 'user@cyli.org' with the domain password.

So, a long time ago, Microsoft put an icon on the task bar (the bar across the bottom of the Desktop¹⁾ ) that had the word 'Start' on it, that made it easy for IT-Geeks to say things like “Click on the 'Start' button”.

Alas, it is no longer so… IT-Geeks may still call it a 'Start' button, but that button has been relegated to a monochrome, wordless, shell of it's former self, no curves or high-lights, no personality at all, just four little trapezium, waiting to be clicked…