How do you make a place where you can only step on for a few seconds, and it will dissapper if you step on it longer?

How do you make a place where you can only step on for a few seconds, and it will dissapper if you step on it longer? I will reappear after you fall down. I saw this in the ascent of mt. snowy, in snowy peaks, I am confused.

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please move this to help
People make those by either using zones or triggers, so that when the player enters the zone or triggers the trigger the block dissapears

Trigger
triggertriggered- hide barrier/prop

Zone
Zone entered-hide barrier/prop

I am new to Gimkit creative, thank you for helping me

What do these means
Trigger
triggertriggered- hide barrier/prop

Zone
Zone entered-hide barrier/prop

Basically there is a device called a trigger, when a player steps on it it triggers, if you use a wire or channel to connect it to the prop or barrier you are using then it will be
trigger triggered— hides barrier/prop

Edit: Its basically the same thing with the zone just when you enter the zone