There are some apps for this, caffeine for example, but what I do is even simpler. I just changed the energy settings to never sleep but let only the display sleep. You can add a password through the security and privacy settings.
Waaa,.. that's just weird. Using a hotcorner to sleep the display only also doesn't work?The setting to separate Display Sleep and System Sleep are no longer there.
No simple utility, but there is an easy command you need to run in Terminal.app to fix itOk. Is there any utility which I could use to adjust screen sleep/system sleep separately?