If you're new to Construct, feel free to check out my youtube channel where you can see how you can make some well known type game and how a mechanic behind it might work.
Many of them use timers, just to name one: Tetris for example where I create an object type with a timer to be able to let a block fall down gradually
youtu.be/fMtO7q1Wrus
check it out, how it works out for you
cheers