GS510TLP (and other POE switches): Timer Schedules - WHERE do we specify POE action of ON/OFF?

I have been doing IT for over 30 years, but find Netgear's implementation of Timer Schedules (as relates to switching a port's POE power on/off) has me scratching my head.  The issue is that there does not seem to be a place where one specifies what ACTION (POE on or off) should occur for a specific Timer Schedule entry.  It clearly does not exist in the Timer Schedule Configuration screen - as that simply has fields for Time Start and Time End.  So, I would expect it to be somewhere on the POE Port Configuration screen (System->POE->Advanced->POE Port Configuration).  I put a check mark next to whichever port I want to configure/edit, which then loads that ports' fields into the editing mode/line at top.  To implement a Timer Schedule, I click on the Timer Schedule drop down field and pick one that I previously defined.  BUT, where do I tell it what action to take when the Start Time occurs?  Does the POE power for that port turn On or Off at the Start Time???

I looked at the help (clicked on ? link on Timer Schedule and POE Port Config pages, but this issue is never discussed.