My keyboard doesn't have the Eject key. Yet I've always used the ⌃-Eject combination to show the Sleep/Restart/Shutdown window on previous Macs. I want to simulate the key press by typing a different keyboard combination so that (hopefully) macOS will show me that window.
How can I do this?
You can always use the combination: "control+power button" to access this dialog box. If you are using a mac mini like me, this shortcut will however not be of much use to you.
I don't know if there is a way to create a shortcut button which will emulate either the eject or shut down button. I tried various different things like a keyboard shortcut for the power button and an automator workflow for the eject function but without any success so far.
I tried, and when I press the power button (which is Touch ID) with and without any modifier key it just locks the display 
I'm using a MacBook Air M2.
this is no longer supported by the newer Macs. I solved this with an apple script. I found it online but can't remember the source. The display dialog command only supports three buttons, so one must be omitted. Pick your poison... in this example "restart ´" is not active. You can run the script with "Run Apple Script (async in background)" and a trigger of your choosing.
tell application "Finder" to activate
tell application "Finder"
display dialog "Are you sure you want to shut down your
computer now?" buttons {"Sleep", "Shut Down", "Cancel"} default button "Cancel" with icon caution
if button returned of result is "Shut Down" then
shut down
else if button returned of result is "Restart" then
restart
else if button returned of result is "Sleep" then
sleep
end if
end tell