Manually lock device in Android 5.0 Lollipop I have just upgraded my Nexus device to Android 5.0.1 from 4.4.2 and I can't find a lock button. Previously, you could tap your picture in the setting pull down menu.

I'm not asking how to set a lock timeout or how to have it lock when I turn the screen off/push the power button. I know how to do that and usually I don't want my device to lock when I turn the screen off. However there are times when I know I'm going to step away from my device and want to explicitly lock it without having to wait for the timeout.

Is this a feature they have entirely remove with 5 or is it just hiding?
Yes, they have removed this toggle in the quick settings menu. Custom ROMs may be able to restore the toggle.