How to Locate Team IDs and Play Level Codes: https://www.youtube.com/watch?v=Xh33mCtvzEI 

How Leagues Upload Regular Season Rosters: https://www.youtube.com/watch?v=r1vWuXyGa7o

How League Activate (Lock) Regular Season Rosters: https://www.youtube.com/watch?v=yQ8ThSkjB94

How to upload player data- https://stacksportsportal.force.com/helpcenter/s/article/Preparing-Uploading-your-Player-Data?b=0011T00002R7RGFQA3

How to upload Coach data (admins)- https://stacksportsportal.force.com/helpcenter/s/article/Preparing-Uploading-your-Admin-Coach-Data?b=0011T00002R7RGFQA3