Move Graph Down

How do you move the graph down? Because I can't see the top spikes and when I measure the tools are above the screen and I cannot figure out how to move the whole graph down.

You would think you could hold the mouse, and drag it down but nooooo

I also clicked every button on the screen with left and right mouse button

And I have found nothing

And yet, I am watching videos of some people who use your site, and do this all the time.

So, how ?