Rookie's mistake.
I'm still pretty new to this, so just to get an understanding.
I should choose 15 players considering ALL of the group stage matches. I can sub players in/out and I can make 1 transfer between games, but in general the 15 players I choose should be done with all 3 rounds of group stages in mind?
I just joined as well, as Shark's jolly men. What's shown as my name though? I can only see it as "You"