Most of us are using a computer to control our displays. That allows us to program it once and let it run unattended. The scheduler starts my display at 6:30 and turns it off at 11:00. I check it periodically to make sure it is running, but I don't watch it every night.
Having said that, LSP has some built in capabilities for external triggers. I have not looked into it that much, but one of their videos shows a person playing sequences on the display using a Wii guitar.