I guess I cannot do that with every program, but I expect that Chrome and LibreOffice can be "preloded" when the system starts. How to do that?
I have checked in Chrome settings Google Cloud Print and ~"after close stay in background as a service". It does not apply since when I close Chrome, there is none chrome-like process running in
gnome-system-monitor. Chrome has been installed from Google website, not Software Center.
EDIT: Chromium installed via Software Center also do not start with a system or stay in the background when closed nor as a process or a service.