Here are the most used formations by the 7v7, 9v9 and 11v11 BSC teams.

It's very important, that when choosing the formation your team is going to play, to consider the players that you have and their characteristics. Each formation has its pros and cons, so when choosing the formation you need to understand them in order to better understand the match and also the training session.

Some drills can help the players better understand their roles during the game, for exemple: My 9v9 team plays in a 1-3-4-1 formation and when I'm doing some decision making drills I'm making a line of 3 in the back so they can practice what they'll be doing in the game.