I want to change the members in the game today...
In that case, you had better use the information registered already.
At first make a new game using it,and then correct in the game edit screen.
After You can without affecting the members and scores of already registered,
you look back on the game today.

1. Edit the team information about this game

Change of the team name, group name, coach and members, from here.

These changes can not save.
When you use it many times, you had better register the information as new team.

2. Edit the game information about this game.

Change of the game title, place and team uniform, from here.