Hi All,
If memory serves me, you can set this up under Win 10 thru the Settings, System, Power & Sleep, Additional power settings, on left hand side click on "Choose what the power button does" then click on "Change settings that are currently not available" to enable making changes to the Shutdown settings greyed out below.
You will see the following:
Fast Startup (this is fully separate from the hibernate function....only when hibernate function below is checked as well is when these will co-exist....the rest is as Bizman has typed when the box is checked.....)
Hibernate (when this box is checked the OS will go into hibernate instead of full shutdown when the power button is pressed....uncheck it to enable full shutdown w\o hibernate function......).
Lock (when checked it should lock your cloud MS account when shutdown power button is pressed.....I don't have a MS cloud account (or better said, I haven't initiated a MS cloud account...........) to verify this 1.
Hope this helps.