Question about flash on Camera

hi everyone!! i’m super super new to cameras but i just got a canon eos rebel t7!

one of my friends has a rebel t6, and when you lightly hold the shutter button with the flash up, it’ll turn on the flash so you can see what your picture will look like with the flash without actually taking the picture if that makes sense.

i’m wondering if there is a way to do this on the t7? i’ve tried lightly holding the shutter button but it hasn’t worked.