How to change/revert starting line in eventlab island?

What is the point of everything about event lab island? I mean, I have a huge square, with absolute nothing, to build from the ground up anything what is nice, but, i can not fit a circuit anticlockwise because i am forced to a starting line. I can’t do my first corner downhill because i can’t set elevation for starting line. there is no relief. all events are flat.
my final thougt is: hope devs watch hours and hours of cities skylines building roads system. the current fh5 system is a pain to make curves. it is useless