How to submit first draft essays on Integrated ibt Essay Tas

Hi! I am new to this forum. I really appreciate this site as a support tool for my TOEFL preparation. As I was browsing this site, specifically on the Integrated ibt Essay Task (with indicated specific class and with teacher's voice feedback), I encountered a simple problem. I want to submit my first draft of my essays ( based from the task given), however I do not know where to submit it. I am not quite sure if its open to all. Please assist me how. Thank you.