Timeline control

How to make an element appear on a specific second ?

i have a circle_A that start from 0 second/0px and move a distance of 200px
then circle_B appear at 2 second/200px

problem is that Circle_B appear even at 0 second/200px ( which i dont know how to solve that)

So how to make Circle_B appear at 2second on the timeline? ( without using opacity )

I think this is what you mean, and instead of using the opacity, I rode the circle behind the other. Or maybe elaborate a little bit more of what your doing, by sending us an example.abCircles.hype.zip (9.3 KB)

Thank you for this method.