11.4 KDE change power settings for display? HOWto?

I am new to KDE and haven’t figured out how to disable the power settings for my monitor so that it always stays on.
I search through the menu buttons but didn’t find anything that would help…
I must be missing something, but I would like some help on this particular issue.

Systemsettings - Power management

Also: disable the screensaver.

thanks to you.