starstruck size rules

I was looking on the game manual for VEX 2016-2017 competition game Starstruck and nowhere could I find the starting Size limits and when we can expand if we can expand and when we have to close and stuff can someone help me with this if they know the answer to my question.

you have to start less than 18x18x18, than can expand as much as you want.

thank you

Yes, I think it is same as all the seasons expect NBN